Sahih Muslim
Sahih Muslim Book 023, Hadith Number 5116.
Hadith Section/Book: Sahih Muslim Sahih Muslim Book 23. Drinks
Chapter : A believer eats in one intestine whereas a non-believer eats in seven intestines.
Ibn 'Umar reported Allah's Messenger (may peace be upon him) as saying: A believer eats in one intestine, whereas a non-believer eats in seven intestines.