Aw kasaiyibim minas samaaa'i feehi zulumaatunw wa ra'dunw wa barq
Or (another similitude) is that of a rain-laden cloud from the sky: In it are zones of darkness, and thunder and lightning: They press their fingers in their ears to keep out the stunning thunder-clap, the while they are in terror of death. But Allah is ever round the rejecters of Faith!