Darkness
Or like darkness in a deep sea, covered by waves upon waves, topped by clouds, layers of darkness, one above another. If one stretches out his hand, he can barely see it. For whomever Allah does not grant light, there is no light.
24:40Or as darkness on a vast, abysmal sea. There covereth him a wave, above which is a wave, above which is a cloud. Layer upon layer of darkness. When he holdeth out his hand he scarce can see it. And he for whom Allah hath not appointed light, for him there is no light.