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.' ”
It was narrated from Ibn 'Umar: that the Messenger of Allah said: “If anyone of you is invited to a wedding feast, let him accept.”
It was narrated from Abu Hurairah: that the Messenger of Allah said: 'The wedding feast on the first day is an obligation, on the second day is a custom and on the third day is showing off.”