Yahya related to me from Malik from Abdullah ibn Dinar that Abdullah ibn Umar related that Umar ibn al-Khattab mentioned to the Messenger of Allah, may Allah bless him and grant him peace, that he would sometimes become junub in the night. The Messenger of Allah, may Allah bless him and grant him peace, said to him, "Do wudu and wash your penis, and then sleep."
Muwatta Malik Book 2, Hadith 77
← Previous Hadith Yahya related to me from Malik from Nafi that Abdullah ibn Umar used to say, "When the circumcised part passes the circumcised part, ghusl is obligatory."

Muwatta Malik Book 2, Hadith 76 Next Hadith → Yahya related to me from Malik from Hisham ibn Urwa from his father that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, used to say, "If you have intercourse with your wife and then wish to go to sleep before doing ghusl, do not sleep until you have done wudu as for prayer."

Muwatta Malik Book 2, Hadith 78