The Messenger of Allah ﷺ said, "People, whoever buys a muhaffalah has the option for three days. If he returns her, he must return with her twice the amount of her milk," or he said, "the equivalent of her milk in wheat."
حدثنا محمد بن عبد الملك بن أبي الشوارب حدثنا عبد الواحد بن زياد حدثنا صدقة بن سعيد الحنفي حدثنا جميع بن عمير التيمي حدثنا
قال رسول الله ﷺ يا أيها الناس من باع محفلة فهو بالخيار ثلاثة أيام فإن ردها رد معها مثلي لبنها أو قال مثل لبنها قمحا
[Its chain is daif] Narrated by Abu Dawud in the Book of Sales, Chapter: One who buys an animal with a bound udder and dislikes it, [Hadith: 3446], from the hadith of Abdul-Wahid, with this wording.Sadaqah and Jamee are both daif, and the majority of scholars graded them daif. Refer to Tahdhib and other sources.