Narrated from Abu Hurairah (may Allah be pleased with him) that a disbeliever guest came to the Messenger of Allah (peace and blessings of Allah be upon him). The Prophet (peace be upon him) ordered that a goat be milked for him. The goat was milked and he drank its milk. Then another was milked and he drank that too. In this way, he drank the milk of seven goats. Then, the next morning, he accepted Islam. The Messenger of Allah (peace be upon him) ordered that a goat be milked for him. It was milked and he drank its milk. Then the Prophet ordered another, but he could not drink all of its milk. Upon this, the Messenger of Allah (peace be upon him) said: "A believer drinks in one intestine, and a disbeliever drinks in seven intestines." __REF_N__ Imam Tirmidhi says: This hadith, through the narration of Suhail, is Hasan Sahih Gharib.
Hadith Referenceسنن ترمذي / كتاب الأطعمة عن رسول الله صلى الله عليه وسلم / 1819