What did the Prophet Muhammad (saw) say is the proper response when one is in the state of fasting and someone insults or quarrels with them?
 Abu Huraira (Allah 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."