وَعَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ
أَنه قَالَ: ذَكَرَ عُمَرُ بْنُ الْخَطَّابِ لِرَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ تُصِيبُهُ الْجَنَابَةُ مِنَ اللَّيْلِ فَقَالَ لَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «تَوَضَّأْ وَاغْسِلْ ذَكَرَكَ ثُمَّ نم»
Ibn Umar told how Umar ibn al-Khattab mentioned to God’s messenger that he was affected by seminal defilement during the night, and was told to perform ablution, wash his penis, and go back to sleep.