It is narrated from a one-eyed man of Thaqif (Qatadah says: He was called Ma'ruf; if his name was not Zuhayr bin Uthman, then I do not know his name) that the Messenger of Allah (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 showing off and display."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5287