كتاب النكاح
13  
Marriage
(8b)
Chapter: The Wedding-feast - Section 2
(8)
باب الوليمة - الفصل الثاني
Mishkat al-Masabih 3224
Ibn Mas'ud reported God’s Messenger as saying, “The food on the first day is a duty, that on the second is a sunna, but that on the third day is to make men hear of it; and if anyone makes men hear of what he does God will make him heard of” (i.e. will publish his hypocrisy on the day of resurrection). Tirmidhi transmitted it.
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «طَعَامُ أَوَّلِ يَوْمٍ حق وَطَعَام يَوْم الثَّانِي سنة وَطَعَام يَوْم الثَّالِثِ سُمْعَةٌ وَمَنْ سَمَّعَ سَمَّعَ اللَّهُ بِهِ» . رَوَاهُ التِّرْمِذِيّ
Reference : Mishkat al-Masabih 3224
In-book reference : Book 13, Hadith 142