Sunan Abi Dawud, Hadith 1855 ⓘ
A man from the Ansar said on the authority of Ka'b ibn Ujrah that he was feeling pain in his head (due to lice); so he shaved his head. The Prophet ordered him to sacrifice a cow as offering.
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، أَنَّ رَجُلاً، مِنَ الأَنْصَارِ أَخْبَرَهُ عَنْ كَعْبِ بْنِ عُجْرَةَ، - وَكَانَ قَدْ أَصَابَهُ فِي رَأْسِهِ أَذًى فَحَلَقَ فَأَمَرَهُ النَّبِيُّ صلى الله عليه وسلم أَنْ يُهْدِيَ هَدْيًا بَقَرَةً .
also referenced under: Hadith 1859 (DarusSalam) & Book 10, Hadith 1855 (USC-MSA)