Whenever the Prophet ﷺ intended to sleep while he was Junub, he used to wash his private parts and perform ablution like that for the prayer.  

كَانَ النَّبِيُّ ﷺ إِذَا أَرَادَ أَنْ يَنَامَ وَهْوَ جُنُبٌ غَسَلَ فَرْجَهُ وَتَوَضَّأَ لِلصَّلاَةِ  

If he intends to eat while he is defiled, he should wash both his hands. Abu Dawud said: Ibn Wahb narrated this tradition on the authority of Yunus. He described the fact of eating as the statement of ‘A’ishah (not the saying of the prophet). It has also been narrated it from ‘Urwah or Abu Salamah. Al-Awza’I narrated it from Yunus on the Authority of Al-Zuhri from the prophet ﷺ as narrated by Ibn al-Mubarak.  

عَنِ الزُّهْرِيِّ بِإِسْنَادِهِ وَمَعْنَاهُ زَادَ وَإِذَا أَرَادَ أَنْ يَأْكُلَ وَهُوَ جُنُبٌ غَسَلَ يَدَيْهِ  

"If the Messenger of Allah wanted to eat when he was sexually impure, he would perform ablution."  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا أَرَادَ أَنْ يَأْكُلَ وَهُوَ جُنُبٌ تَوَضَّأَ  

If the Prophet wanted to eat when he was sexually impure, he would wash his hands.  

أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَأْكُلَ وَهُوَ جُنُبٌ غَسَلَ يَدَيْهِ  

If the Prophet wanted to eat when he was sexually impure, he would wash his hands. (Using translation from Ibn Mājah 593)  

أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَأْكُلَ وَهُوَ جُنُبٌ غَسَلَ يَدَيْهِ