‏النكاح : Hadeeth No:3348 Abu Haraira (Allaah be pleased with him) reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: If any one of you is invited, he should accept (the invitation). In case he is fasting, he should pray (in order to bless the inmates of the house), and if he is not fasting he should eat....

‏الإيمان : Hadeeth No:63 It is narrated on the authority of 'Abdullah b. 'Amr that a man asked the Messenger of Allaah (may peace and blessings be upon him) which of the merits (is superior) in Islam. He (the Prophet) remarked: That you provide food and extend greetings to one whom you know or do not know....