Sahih Muslim
The Book of Transactions (Kitab Al-Buyu)
Book Number: 010 / Hadith Number: 3639
Hammam b. Munabbih said: Out of the ahadith which Abu Huraira (Allah be pleased with him) reported to us from Allah's Messenger (may peace be upon him) one is this that Allah's Messenger (may peace be upon him) said: If one among you buys a she-camel having its udder tied up he has the two options for him after milking it either (to retain it) or return it with a sa' of dates.