Sahih Muslim | Book 8 | Hadith Number 3346

Narrated by Jabir (Allah be pleased with him)
Jabir (Allah be pleased with him) reported that Allah's Messenger (may peace he upon him) said: When any one of you is invited to a feast, he should accept it. He may eat if he likes, or he may abandon (eating) if he likes. Ibn Mathanni did not make mention of the word feast".