1. A number of our people have narrated from Sahl ibn Ziyad from ibn Mahbub from ibn Ri’ab from Zurarah who has said the following: “I once asked abu Ja’far عليه السلام, about a man who covers his face when sleeping because of flies that bother him. He (the Imam) said, ’Yes, he can do so, but must not cover his head; and women are permitted to cover their faces when they sleep.”’