(34) باب مَنْ لَمْ يَرَ الْوُضُوءَ إِلاَّ مِنَ الْمَخْرَجَيْنِ، مِنَ الْقُبُلِ وَالدُّبُرِ
Narrated Abu Sa`id Al-Khudri:
Allah's Messenger (ﷺ) sent for a Ansari man who came with water dropping from his head. The Prophet (ﷺ) said, "Perhaps we have forced you to hurry up, haven't we?" The Ansari replied, "Yes." Allah's Messenger (ﷺ) further said, "If you are forced to hurry up (during intercourse) or you do not discharge then ablution is due on you (This order was canceled later on, i.e. one has to take a bath).
Reference: Sahih al-Bukhari 180
In-book reference: Book 4, Hadith 46
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 4, Hadith 180