On the Day when some faces will be (lit up with) white, and some faces will be (in the gloom of) black(432): To those whose faces will be black, (will be said): "Did ye reject Faith after accepting it? Taste then the penalty for rejecting Faith."
432 The "face" (wajh) expresses our personality, our inmost being. White is the colour of Light; to become white is to be illumined with Light, which stands for felicity, the rays of the glorious Light of Allah. Black is the colour of darkness, sin, rebellion, misery; removal from the Grace and Light of Allah. These are the Signs of Heaven and Hell. The standard of decision in all questions is the justice of Allah.