It was narrated that Abu Hurairah said:
"The worst of food is food of a wedding feast to which the rich are invited and the poor are not. Whoever does not accept an invitation has disobeyed Allah and His Messenger.' " (ID)
English reference (ID): Vol. 3, Book 9, Hadith 1913 (ID)
Arabic reference (ID): Book 9, Hadith 1988 (ID)