صحيح مسلم بالإنكليزيةBook 6: The Book of Fasting (Kitab Al-Sawm) › Chapter 27: WHEN AN OBSERVER OF FAST IS INVITED TO A FEAST, OR SOMEONE FIGHTS WITH HIM, HE SHOULD SAY:" I AM FASTING"
Abu Huraira (Allah be pleased with him) reported Allah's Apostle (may peace be upon him) as saying: If any one of you is invited to a meal when he is fasting, he should say:" I am fasting."
