Mutarrif, from the tribe of Banu ‘Amir bin Sa’sa’ah narrated that ‘Uthman bin Abul-‘As Ath-Thaqafi invited him to drink some milk that he poured for him. Mutarrif said: “I am fasting.” ‘Uthman said: “I heard the Messenger of Allah (peace be upon him) say: ‘Fasting is a shield against the Fire just like the shield of anyone of you against fighting.’”
Sunan Ibn Majah, Vol. 1, Book 7, Hadith 1708
