Jenkins, J.
(After stating the foregoing facts.) Where a plaintiff in fi. fa. accepts a sum of money from one of the joint defendants therein under an agreement that he is to be relieved from further liability under the fi. fa., the other defendants are also relieved, and the fi. fa. is discharged. Warthen v. Melton, 133 Ga. 113 (4) (63 S. E. 833, 131 Am. St. E. 184). The question in this case is, did the plaintiff in fi. fa. agree to release Chapman from further liability upon the payment made by him to the sheriff? The affidavit of illegality sets up that such a release was made by the plaintiff through the sheriff, acting for him as his duly-authorized agent, and the theory of the plaintiffs in error is that since ,the plaintiff in fi. fa. has received the benefit of the payment so received, he must be held to have adopted the conditions on which it was made (Civil Code of 1910, § 3593), although there is nothing in the record to indicate that the plaintiff in fi. fa. had knowledge of any such agreement on the part of the sheriff. It will be *299seen, however, from the statement made above, that it was specifically agreed in the court below that the defendants in fi. fa. did not claim or intend to allege that the sheriff in receiving the payment and making the alleged release was acting in any capacity other than in his official capacity as sheriff of the county. In other words, it is not contended that in making the agreement he assumed to be acting upon any authority given him by the plaintiff in fi. fa. The sheriff, as such, as a matter of course, has no authority whatsoever to make any alterations as to the liability under the execution of the defendants .in fi. fa., and is only empowered to extinguish a fi. fa. upon the receipt in cash of the full amount called for thereby. The defendant in fi. fa. was chargeable with knowledge that such is the law. Since, therefore, the sheriff, as such, could not assume such authority, and since it is admitted that he did not purport to be acting under any such authority delegated to him by the plaintiff in fi. fa., the doctrine of ratification could not in any event have proper application, for the reason that a subsequent ratification by the principal of the acts of'another must be for acts which were assumed to have been done in his behalf and under his authority. See Roberts v. Bank of Eufaula, 20 Ga. App. 221, 225, (92 S. E. 1015).
Judgment affirmed.
Wade, C. J., and Luke, J., concur.