(29) باب مَا جَاءَ فِي الْمُصَرَّاةِ
Narrated Abu Hurairah:
That the Prophet (ﷺ) said: "Whoever purchases an animal that has not been milked, then he retains the option for three days. If he returns it, then he is to return with it a Sa' of food, not Samra' "[Abu 'Eisa said:] The meaning of "Not Samra'" is "not wheat."This Hadith is Hasan Sahih. This Hadith is acted upon according to our companions, among them Ash-Shafi'i, Ahmad, and Ishaq.
Reference: Jami` at-Tirmidhi 1252
In-book reference: Book 14, Hadith 52
English translation: Vol. 1, Book 12, Hadith 1252