And ‘Ubaydullah ibn ‘Umar al-Qawārīrī narrated to me, saying: Ḥammād — meaning Ibn Zayd — narrated to us, from Ayyūb. (Another chain:) And Abū al-Rabī‘ narrated to me, saying: Ḥammād narrated to us, saying: Ayyūb narrated to us, saying: I heard Mujāhid narrating from ‘Abd al-Raḥmān ibn Abī Laylā, from Ka‘b ibn ‘Ujrah — may God be pleased with him — who said: The Messenger of God, peace and blessings be upon him, came upon me at the time of al-Ḥudaybiyyah while I was kindling a fire beneath — al-Qawārīrī said: a cooking pot of mine, and Abū al-Rabī‘ said: an earthenware pot of mine — and lice were falling onto my face. He said: “Do the pests of your head harm you?” He said: I said, “Yes.” He said: “Then shave your head, and fast three days, or feed six poor persons, or offer a sacrifice.” Ayyūb said: And I do not know with which of these he began.