حَدَّثَنَا الْقَعْنَبِيُّ، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ إِذَا دُعِيَ أَحَدُكُمْ إِلَى الْوَلِيمَةِ فَلْيَأْتِهَا ‏"‏ ‏.‏

‘Abd Allah b. ‘Umar reported the Prophet(PBUH) as sayings: when one of you is invited for a wedding feast, he must attend it. Translation Not Available

Book reference: Sunan Abi Dawud Book 28 Hadith 3736
Web reference: Sunan Abi Dawud Book 27 Hadith 3727