Abu Sa'id al-Khudri reported God’s messenger as saying, “When any of you has intercourse with his wife and wishes to repeat it, he must perform ablution between the two acts.” Muslim transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الطهارة / 454
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «رواه مسلم (27/ 308)»