"If the Messenger of Allah wanted to eat when he was sexually impure, he would perform ablution." (Using translation from Ibn Mājah 591)   

«كَانَ رَسُولُ اللَّهِ ﷺ إِذَا أَجْنَبَ فَأَرَادَ أَنْ يَأْكُلَ أَوْ يَنَامَ تَوَضَّأَ»