17لِنَفتِنَهُم فيهِ ۚ وَمَن يُعرِض عَن ذِكرِ رَبِّهِ يَسلُكهُ عَذابًا صَعَدًاN. J. Dawoodand thereby put them to the proof. He that pays no heed to his Lord’s warning shall be sternly punished.