Sahih Muslim

Sahih Muslim 1429 i

The command to accept invitations
Arabic hadith text
وَحَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، أَخْبَرَنَا ابْنُ وَهْبٍ، حَدَّثَنِي عُمَرُ بْنُ مُحَمَّدٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏"‏إِذَا دُعِيتُمْ إِلَى كُرَاعٍ فَأَجِيبُوا ‏"
Translation
Ibn Umar (Allah be pleased with them) reported Allah's Apostle (ﷺ) having said

When you are invited to a feast (even though it is) the leg of the sheep, you should accept it.