Ka'b bin 'Ujrah (RAA) narrated, ‘I was carried to the Prophet (ﷺ) and the lice were falling over my face. He said, “I did not know that your disease is hurting you as much as what I see. Can you sacrifice a sheep?” I said, ‘No.’ He then said. “Fast for three days or feed six poor people, half a Sa’ each.” Agreed upon.