Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Do not go out to meet the caravans bringing merchandise (before they reach the market or bazaar), and do not withhold the milk of goats and she-camels for sale. So, whoever buys such an animal will have the choice of two things: if he wishes, he may keep the animal with him, and if he wishes, he may return it, but he must also return a sa’ (measure) of dates along with it, not of wheat.