أَخْبَرَنَا الْحُسَيْنُ بْنُ حُرَيْثٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَاصِمٍ، عَنْ أَبِي الْمُتَوَكِّلِ، عَنْ أَبِي سَعِيدٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا أَرَادَ أَحَدُكُمْ أَنْ يَعُودَ تَوَضَّأَ " .
It was narrated from Abu Sa'eed that the Prophet (PBUH) said: "When any one of you a wants to return (to have intercourse again), let him perform Wudu'." Translation Not Available
Book Ref: Sunan An Nisai Book 1 Hadith 263
Web Ref: Sunan An Nisai Not Available