عَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ إِذَا نُودِيَ أَحَدُكُمْ إِلَى وَلِيمَةٍ فَلْيَأْتِهَا
It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: When any of you is invited to a wedding feast (walimah), he should attend that walimah.