The Prophet ﷺ came to me during the period of Al-Hudaibiya, while I was lighting fire underneath a cooking pot and lice were falling down my head. He said, "Do your lice hurt your?" I said, "Yes." He said, "Shave your head and fast for three days or feed six poor persons or slaughter a sheep as a sacrifice:"  

أَتَى عَلَىَّ النَّبِيُّ ﷺ زَمَنَ الْحُدَيْبِيَةِ وَأَنَا أُوقِدُ تَحْتَ بُرْمَةٍ وَالْقَمْلُ يَتَنَاثَرُ عَنْ رَأْسِي فَقَالَ أَيُؤْذِيكَ هَوَامُّكَ قُلْتُ نَعَمْ قَالَ فَاحْلِقْ وَصُمْ ثَلاَثَةَ أَيَّامٍ أَوْ أَطْعِمْ سِتَّةً أَوِ انْسُكْ نَسِيكَةً قَالَ أَيُّوبُ لاَ أَدْرِي بِأَيَّتِهِنَّ بَدَأَ