…The mark is on their faces, from the effect of their prostrations…He said:The believer (muʾmin) in God is a face without a reverse side, [since he is] advancing towards Him without ever turning back from Him. This is the mark of the believers. ʿĀmir b. ʿAbd al-Qays said, ‘It is almost as if the face of a believer is informing [us] of that which is hidden within him, and the same can be said of the face of the disbeliever.’ This is what is meant by His words: The mark is on their faces. Ibn Masʿūd said, ‘The secret of the believer is a mantle over him’. But God, Glorified and Exalted is He, knows best.His words, Exalted is He: