question #3 Sahih al-Bukhari 292, Book 5, Hadith 44 : What changes were made to the rulings on purification after sexual intercourse according to Islamic teachings?

I asked `Uthman bin `Affan about a man who engaged in the sexual intercourse with his wife but did
not discharge. `Uthman replied, “He should perform ablution like that for the prayer after washing his
private parts.” `Uthman added, “I heard that from Allah’s Messenger (ﷺ).” I asked `Ali bin Abi Talib, Az-
Zubair bin Al-`Awwam, Talha bin ‘Ubaidullah and Ubai bin Ka`b and they gave the same reply. (Abu
Aiyub said that he had heard that from Allah’s Messenger (ﷺ) ) (This order was canceled later on so one has
to take a bath. See, Hadith No. 180).