Hadith 1:141
Narrated Abu Sa’id Al-Khudri (rad):
Allah’s Messenger (ﷺ) said: “If one of you has sexual intercourse with his wife and wishes to repeat he should perform ablution between them” [Reported by Muslim].
وَعَنْ أَبِي سَعِيدٍ اَلْخُدْرِيِّ - رضى الله عنه - قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ إِذَا أَتَى أَحَدُكُمْ أَهْلَهُ, ثُمَّ أَرَادَ أَنْ يَعُودَ فَلْيَتَوَضَّأْ بَيْنَهُمَا وُضُوءًا } رَوَاهُ مُسْلِم ٌ (142)
Original Reference: Bulugh al-Maram 117