«كل شىء هالك إلا وجهه‏» means "Everything will perish except His Face" (by «إلا وجهه‏» is meant) "except His Dominion." Some people have taken this to mean those deeds which are done to seek Allah's pleasure. (In terms of reward, they too will not perish.) Mujahid said that by «الأنباء‏» are meant proofs.