Narrated Abu Hurairah:
That the Prophet (ﷺ) said: Whoever purchased an animal that has not been milked, then he the choice when he milks it, if he wishes he may return it, returning a Sa' of dried dates along with it.
[Abu 'Eisa said:] There are narration on this topic from Anas, and a man from the Companions of the Prophet (ﷺ).