Narrated Abu Huraira: Allah's Messenger (ﷺ) came across me and I was Junub. He took my hand and I went along with him till he sat down I slipped away, went home and took a bath. When I came back, he was still sitting there. He then said to me, "O Abu Huraira! Where have you been?' I told him about it. The Prophet (ﷺ) said, "Subhan Allah! O Abu Huraira! A believer never becomes impure."

Narrated Abu Salama: I asked `Aisha "Did the Prophet (ﷺ) use to sleep while he was Junub?" She replied, "Yes, but he used to perform ablution (before going to bed).

Narrated Hisham: as the following Hadith 290. Narrated Abu Huraira: The Prophet (ﷺ) said, "When a man sits in between the four parts of a woman and did the sexual intercourse with her, bath becomes compulsory."

Narrated Zaid bin Khalid Al-Juhani: 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." 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).

Narrated Ubai bin Ka`b: I asked Allah's Messenger (ﷺ) about a man who engages in sexual intercourse with his wife but does not discharge. He replied, "He should wash the parts which comes in contact with the private parts of the woman, perform ablution and then pray." (Abu `Abdullah said, "Taking a bath is safer and is the last order.")