1. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan, from Hammad ibn ‘Isa from Rib‘i, from Muhammad ibn Muslim who has said the following: “I once asked abu Ja‘far عليه السلام, about a man’s performing Salah (prayer) with his face veiled. He (the Imam) said, ‘It is not permissible while on the ground; however, while riding on a stumper is not an offense.’”