Al-Kahf 18:58

Warabbuka alghafooru thoo arrahmatilaw yu-akhithuhum bima kasaboo laAAajjalalahumu alAAathaba bal lahum mawAAidun lan yajidoo mindoonihi maw-ila

And your Lord is the Forgiving, the possessor of mercy. If He were to impose blame upon them for what they earned, He would have hastened for them the punishment. Rather, for them is an appointment from which they will never find an escape.

Your Lord is the Most Forgiving, the Lord of Mercy. If He seizes them for what they did, He may cause the punishment to befall them sooner, but there is an appointed time for them, from which they can never find a place of refuge.