CHAPTER: WHEN AN OBSERVER OF FAST IS INVITED TO A FEAST, OR SOMEONE FIGHTS WITH HIM, HE SHOULD SAY:" I AM FASTING"
No. 2562
Abu Huraira (Allaah be pleased with him) reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: If any one of you is invited to a meal when he is fasting, he should say:" I am fasting."
No. 2563
Abu Huraira (Allaah be pleased with him) reported: When any one of you gets up in the morning in the state of fasting, he should neither use obscene language nor do any act of ignorance. And if anyone slanders him or quarrels with him, he should say:" I am fasting, I am fasting."