Abdullah bin Uthman al-Thaqafi (may Allah have mercy on him) narrates from a one-eyed man of Thaqif who was always spoken of with praise; if his name is not Zuhayr bin Uthman, then I do not know his name, that the Prophet (peace and blessings be upon him) said: "The wedding feast (walimah) on the first day is a right, on the second day it is a kindness, and on the third day it is for reputation and showing off."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصداق / 14509