Sahih Muslim 3830
صحيح مسلم#3830SahihAbu Huraira (Allah be pleased with him) reported Allah's Messenger (may peace be'upon him) as saying:He who bought a goat having its udder tied up should go back with it, milk it, and, if he is satisfied with its milk, he should retair it, otherwise he should return it along with a sa' of dates
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 21:30