Mukhtasar Muslim

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that a guest came to the Messenger of Allah (peace and blessings be upon him), and he was a disbeliever. The Prophet (peace and blessings be upon him) hosted him. The Prophet (peace and blessings be upon him) ordered that the milk of a goat be milked, and he drank it. Then (the milk of) a second goat was milked, and he drank that too. Then (the milk of) a third goat was milked, and he drank that too, until he drank the milk of seven goats. Then, the next morning, he became a Muslim. Then the Prophet (peace and blessings be upon him) ordered that the milk of a goat be milked, and he drank its milk, then (the milk of) a second goat was milked, but he could not finish it. Then the Messenger of Allah (peace and blessings be upon him) said: "A believer drinks in one intestine, and a disbeliever in seven intestines."