The Messenger of Allah ﷺ said, "The conditions most deserving to be fulfilled are those by which you have made intimate relations lawful."
حدثنا عيسى بن حماد أخبرني الليث عن يزيد بن أبي حبيب عن أبي الخير
عن رسول الله ﷺ أنه قال إن أحق الشروط أن توفوا به ما استحللتم به الفروج
Bukhari narrated it in the chapter on conditions regarding the dowry at the time of the marriage contract, in the Book of Conditions, no. 2721, from the hadith of Layth bin Saad, and Muslim narrated it in the chapter on fulfilling conditions in marriage, in the Book of Marriage, no. 1418, from the hadith of Yazid bin Abu