Kaab bin Ujrah said I had lice in my head when I accompanied the Messenger of Allah ﷺ in the year of Al Hudaibiyyah so much so that I feared about my eyesight. So Allaah, the exalted revealed these verses about me. “And whoever among you is sick or hath an aliment of the head. ” The Messenger of Allah ﷺ called me and said “Shave your head and fast three days or give a faraq of raisins to six poor men or sacrifice a goat. So, I shaved my head and sacrificed.