Defendants in error executed a division order to the Gulf Pipe Line Company containing the following provisions:
“First — The oil run in pursuance of this division order shall become the property of the Gulf Pipe Line Company as soon as the same is received into its pipe lines.
“Second — The oil received in pursuance of this division order shall be paid for to the party or parties entitled thereto, according to the division of interest shown above, at the- price for each day’s receipts posted on -that day by the Gulf Pipe Line Company, for the same kind and quality of oil in the field in which it is received. Settlements therefor shall be made semimonthly. For the amount due on account of the oil received during the first fifteen days of each calendar month, payment shall be made on or before the twenty-fifth day of such month; and for the amount due on account of the oil received during the balance of such calendar month, payment shall be made on or before the tenth day of the succeeding month. These payments are to be made in checks of the Gulf Pipe Line Company, to be mailed or delivered to the parties thereto entitled.
“Third — The Gulf Pipe Line Company may refuse to receive any oil which may not be merchantable. If necessary to make it so, oil shall be steamed ór treated by the well owners before receipt by the pipe line. Upon receipt of the oil the company will make proper deduction for all of the dirt, sediment or other foreign matter in the oil. In addition, the Company will deduct one (1%) per cent to cover loss in handling. Further correction will be made for temperature of the oil purchased, by deducting or allowing on the basis of one twenty-fifth (l-25th) of one (1%) per cent for each degree Fahrenheit above or below sixty degrees Fahrenheit. In making settlement the Gulf Pipe Line Company’s grades and measurements shall govern and control.
“Fourth — The undersigned agree, in case of any adverse claim of title to the oil run hereunder, or any part thereof or to the land from which it is run, to furnish to the Gulf Pipe Line Company satisfactory evidence of title, or, in case of failure to do so, to furnish satisfactory indemnity bond, on reasonable demand, against such adverse claim or claims; and that the Gulf Pipe Line Company may retain the purchase price of the oil until such bond shall be furnished, -or until the dispute as to ownership is settled, so as to relieve the Company from all liability for oil received.”
The pipe line received and paid for the royalty oil belonging to-defendants in error to September 1, 1927, subsequent to that date the Pipe Line Company received under the division order royalty oil belonging to the defendants in error Manns of the value of $14,014.48 and to defendants in error Nearens $19,620.70, for all of which the Pipe Line Company refused payment on the ground that there was an adverse claim made to the title of the Trenton Rock Acre and the value of the oil produced therefrom.
Plaintiff in error duly notified defendants in error of the adverse claim and requested that a satisfactory indemnity bond be furnished the -Pipe Line Company. Defendants in error refused to furnish a satisfactory indemnity bond. Defendants in error made settlement with the claim*1067ants of the adverse assertion of title and demanded payment for the oil with interest thereon from the date that the same was due and payable under the second section of the division order. Upon refusal of the Pipe Line Company to pay the demands of defendants in error this suit was filed seeking a recovery of said sums, together with interest thereon as aforesaid. The adverse claimants intervened. The trial court granted judgment as prayed for by the defendants in error and allowed the interveners a recovery of $1,000 of a part of each defendants in error Manns and defendants in error Nearens, amounting in the aggregate to the sum of $2,000. The Pipe Line Company prosecuted its appeal in each of the causes to the Court of Civil Appeals of Texas sitting at Beaumont. The judgment in favor of the Manns was affirmed in its entirety. The judgment in favor of the Nearens was in part affirmed and in part reversed and remanded for another trial. 111 S.W.2d 335. The Pipe Line Company sued out writs of error in each cause, both of which were granted. The Court of Civil Appeals stated in its opinion that the interveners, by their intervention and acceptance of judgment against the Pipe Line Company in each case in the sum of $1,000 as a part of the royalty money due the Manns and the Nearens, were estopped to prosecute other suits pending in which, it was contended, that the land from which the oil was produced was in another and different survey than the John Douthit Survey in Jefferson County. It is unnecessary for us to pass upon the correctness of that conclusion because plaintiff in error has not assailed the judgments of the trial court and Court of Civil Appeals which awarded defendants in error the value of the aggregate oil runs in its applications for writs of error except the assertion that such sums were barred by the two and four-year statutes of limitation. These assignments are obviously without merit in view of our ruling hereinafter to be made. ■ The inter-veners filed no’motion for rehearing in the Court of Civil Appeals but appear in this court asserting that the action of the Court of Civil Appeals was fundamentally erroneous. The interveners are not entitled to assign error in this court under the above facts even though, such errors are claimed to be fundamentally erroneous'. Gráyce Oil Co. v. Peterson,. 128 Tex. 550, 98 S.W.' 2d 78i: " ' ' ■
The real issue, as presented in this Court, between the-Pipe Line Company and defendants in error Manns and Nearens, is whether or not under the provisions of the division order the defendants in error are entitled to interest from the time as provided in the second section of said division order or from the time provided for in the fourth section of said division order. We have a written contract by and between the Pipe Line Company and the royalty owners of the oil wherein no interest is provided in said written contract. If any interest is payable thereunder it is in virtue of an article of the Texas statute which is known as Vernon’s Annotated Revised Civil Statutes of Texas 1925, Article 5070, which provides: “When no specified rate of interest is agreed upon by the parties, interest at the rate of six per cent per an-num shall be allowed on all written contracts ascertaining the sum payable, _ from and after the time when the sum is due and. payable.” The query then arises under the division order: When was the royalty oil purchased by the Pipe Line Company due to be paid to the owners thereof by the purchaser, the Pipe Line Company?
The Honorable Court of Civil Appeals at Beaumont took the view that the purchase price for the oil received by the Pipe Line Company became due and payable as provided under the second section of the division order, that is, that the purchase price shall be made on or before the ,25th day of such month and for the amount due on account of the oil received during the balance of- such calendar month payment shall be made on or before the 10th day of the succeeding month. . If there had been no adverse claims asserted to the royalty oil there could be^ no doubt but that this could be a correct conclusion. However, in the fourth section of the division order the defendants in error agreed in case of any adverse claim of title to the oil run hereunder, or any part thereof, or to the land from which it is run, to furnish to the Gulf Pipe Line Company satisfactory evidence of title or in case of failure to; do so to -furnish satisfactory indemnity bond on reasonable demand against such adverse claim or.claims and that the Gulf Pipe Line Company may retain the purchase price of .the .oil until such bond shall be furnished or until the disputé as to ownership is settled so as to relieve the company from all liability'-of oil received.
*1068Under the fourth section it is clear to our minds that the parties intended to provide, for alternative provisions in which a postponement of the time when the purchaser of the oil would have to pay for it until the adverse claim was settled or until a satisfactory indemnity bond was furnished to the oil company. The Pipe .Line Company had no right to determine which claimant owned the oil and was not obligated under the division order to litigate the question of ownership for the defendants in error with adverse claimants. Rio Bravo Oil Co. v. Hebert, 130 Tex. 1, 106 S.W.2d 242. As soon as the Pipe Line Company had notice of an adverse claim being asserted it had the right to notify the defendants in error and to demand an ■ indemnity bond. When such indemnity bond was refused after reasonable demand, under the specific terms of the division order, the Pipe Line Company had the right to retain the purchase price of the oil. It has been ruled in this state that where a promise is conditioned upon the' happening of a future event as a rule a condition precedent must bé exgctly performed or fulfilled before the promise can be'enforced. Reagan v. Bruff, 49 Tex.Civ.App. 226, 108 S.W. 185; Cooksey v. Jordan, Tex.Civ.App., 140 S.W. 1175. It was decided that “It is quite elementary that an instrument payable upon a condition which does not import an absolute liability is not payable until that condition has happened.” Ferguson v. Mansfield, 114 Tex. 112, 263 S.W. 894, 900. It is also elementary that a party to a contract who is himself in default cannot maintain a suit for its breach. Smith v. Fort, Tex.Civ.App., 58 S.W.2d 1080. It seems to us that the purchase price of the royalty oil under the division order is not due and payable until the disputes as to ownership have been settled or a bond is furnished. Concededly no bonds were furnished. The purchase price of the oil ¡under the facts of this case not being due and payable until the adverse claim was extinguished forces ■ the conclusion that the defendants in error are not entitled to collect interest until the trial court’s judgment was entered in this case which settled and extinguished the dispute as to the adverse claims made by the interveners herein. ■
The quoted article of the statute has no application except on written contracts. The case of Yaws v. Jones, Tex.Sup., 19 , S.W. 443, which was cited as án authority by the Court of Civil Appeals, can have no application to the case before us because in that case there was a contract which specified a rate of interest which was agreed on by the parties. In the case of Kishi et al. v. Humble Oil & Refining Company et al., 5 Cir., 10 F.2d 356, a division order was not involved, and, it has been pointed out by another circuit, has no application to a case in which there is a written contract between the parties.
It is contended by the defendants in error that because the Pipe Line Company, following its general denial, asserted certain limitation pleas to the cause of action asserted by the defendants in error that the plaintiff in error is not a disinterested Stakeholder and because it failed to tender into the registry of the court the purchase price of the oil that it should be made to pay interest thereon. That proposition can have no application to the case here presented. In the first place, defendants in error claimed interest in virtue of the division order and the quoted statute. The recoveries by interveners of substantial judgments in these cases foreclose any assertion by the defendants in error that such claims as to the Pipe Line Company were not bona fide “adverse claims” within the purview of the division order. The defendants in error not only ..demanded the purchase price of the oil but demanded interest from the time that it was delivered to the Pipe Line Company. The defendants in error’s refusal to accept the principal without interest from the time the oil was rim makes a formal, tender unnecessary and is equivalent to a valid tender. Bluntzer v. Dewees, 79 Tex. 272, 15 S.W. 29. In 40 Tex.Juris. page 840, 841, it is said: “Since payment of a debt implies capacity and willingness on the part of fhe creditor to accept an unconditional offer of payment in full discharge, formal tender of payment is excused where -the creditor has signified that he is unwilling, to accept the money or thing due as a discharge of the debt and the refusal of the creditor to accept the amount offered makes it unnecessary for the debtor to produce the medium of payment.” Since, in our opinion, the defendants in error, áre not entitled to interest from the dates that the oil was run, it is our opinion that the judgment of the trial court allowing a recovery on behalf of the defendants in error for the purchase price of the oil should be affirmed, and that part of the judgment of *1069the trial court and the Court of Civil Appeals allowing judgment for the interest should be here reversed, and judgment rendered in favor of the plaintiff in error. In view of our ruling, there is no necessity of any remanding of the case as to defendants in error Nearens.
Opinion adopted by the Supreme Court.