Sahih al-Bukhari 5177

Arabic

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، رضى الله عنه أَنَّهُ كَانَ يَقُولُ شَرُّ الطَّعَامِ طَعَامُ الْوَلِيمَةِ يُدْعَى لَهَا الأَغْنِيَاءُ، وَيُتْرَكُ الْفُقَرَاءُ، وَمَنْ تَرَكَ الدَّعْوَةَ فَقَدْ عَصَى اللَّهَ وَرَسُولَهُ صلى الله عليه وسلم‏.‏

English translation

Narrated Abu Huraira:The worst food is that of a wedding banquet to which only the rich are invited while the poor are not invited. And he who refuses an invitation (to a banquet) disobeys Allah and His Apostle

Reference: Sahih al-Bukhari 5177, Book of Wedlock, Marriage (Nikaah). English translation by Dr. Muhammad Muhsin Khan.