بُلُوغُ الْمَرَامِ
Bulugh al-Maram 995
Marriage
وَعَنْ عُقْبَةَ بْنِ عَامِرٍ - رضى الله عنه - قَالَ : قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ إِنَّ أَحَقَّ اَلشُّرُوطِ أَنْ يُوَفَّى بِهِ , مَا اِسْتَحْلَلْتُمْ بِهِ اَلْفُرُوجَ } مُتَّفَقٌ عَلَيْهِ [1] .
Narrated 'Uqbah bin 'Aamir (RA): Allah's Messenger (ﷺ) said: "The most worthy conditions to be fulfilled are those by which you make sexual intercourse lawful for yourselves (in marriage)." [Agreed upon].
Sunnah.com reference: Book 8, Hadith 32