Sayyiduna Abu Hurairah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "Whoever buys a goat or she-camel whose milk has been collected, he has a choice for three days (if he wishes, he may return that goat, she-camel, cow, etc.), and if he returns it, he should return with it one sa’ of food other than wheat."