This Tradition has been narrated on the Authority of al-Zuhri through a different chain. It adds :

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.

حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ الْبَزَّازُ، حَدَّثَنَا ابْنُ الْمُبَارَكِ، عَنْ يُونُسَ، عَنِ الزُّهْرِيِّ، بِإِسْنَادِهِ وَمَعْنَاهُ زَادَ " وَإِذَا أَرَادَ أَنْ يَأْكُلَ وَهُوَ جُنُبٌ غَسَلَ يَدَيْهِ " . قَالَ أَبُو دَاوُدَ وَرَوَاهُ ابْنُ وَهْبٍ عَنْ يُونُسَ فَجَعَلَ قِصَّةَ الأَكْلِ قَوْلَ عَائِشَةَ مَقْصُورًا وَرَوَاهُ صَالِحُ بْنُ أَبِي الأَخْضَرِ عَنِ الزُّهْرِيِّ كَمَا قَالَ ابْنُ الْمُبَارَكِ إِلاَّ أَنَّهُ قَالَ عَنْ عُرْوَةَ أَوْ أَبِي سَلَمَةَ وَرَوَاهُ الأَوْزَاعِيُّ عَنْ يُونُسَ عَنِ الزُّهْرِيِّ عَنِ النَّبِيِّ ﷺ كَمَا قَالَ ابْنُ الْمُبَارَكِ .