Hadith 10:63
‘Uqba b. ‘Amir reported God’s Messenger as saying, “The most worthy conditions you fulfil are those by which you make sexual intercourse lawful." (Bukhari and Muslim.)
وَعَنْ عُقْبَةَ بْنِ عَامِرٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَحَقُّ الشُّرُوطِ أَنْ تُوفُوا بِهِ مَا اسْتَحْلَلْتُمْ بِهِ الْفروج»
Original Reference: Mishkat al-Masabih 3143