and when your lord proclaimed that he would surely send against them until the day of resurrection those who would inflict on them a terrible punishment. indeed your lord is swift in retribution and indeed he is allforgiving allmerciful.
وإذ تأذن ربك ليبعثن عليهم إلى يوم القيامة من يسومهم سوء العذاب إن ربك لسريع العقاب وإنه لغفور رحيم