لِّيَسۡـَٔلَ ٱلصَّـٰدِقِينَ عَن صِدۡقِهِمۡۚ وَأَعَدَّ لِلۡكَٰفِرِينَ عَذَابًا أَلِيمٗا
so that (their Lord) may question the truthful about their truthfulness. As for the unbelievers, He has kept a painful chastisement in store for them
Author: Abul Ala Maududi