Surah 44. Ad-Dukhan, Ayah 57

I.e., by His having offered them guidance, of which they availed themselves: thus, the attainment of ultimate felicity is the result of an interaction between God and man, and of man's communion with Him.

This is our idea of Salvation; the negative avoidance of all the consequences of evil, and the positive attainment of all-and more than all-that our hearts could possibly desire. For Allah's Bounty outstrips anything that our eyes have seen, or our ears have heard of, or our imagination can conceive.