Hadith 306

Ibn Umar reported: Umar b. al-Khattab said to the Messenger of Allah (may peace be upon him), that he became Junbi during the night. The Messenger of Allah (may peace be upon him) said to him: Perform ablution, wash your sexual organ and then go to sleep.

وَحَدَّثَنِي يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنِ ابْنِ عُمَرَ، قَالَ ذَكَرَ عُمَرُ بْنُ الْخَطَّابِ لِرَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ تُصِيبُهُ جَنَابَةٌ مِنَ اللَّيْلِ فَقَالَ لَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ تَوَضَّأْ وَاغْسِلْ ذَكَرَكَ ثُمَّ نَمْ ‏"‏ ‏.‏

Reference: 307300
In-book reference: Book 3, Hadith 306 c
Hadith 306 - The Book of Purification - Sahih Muslim - Sunnah.com