and when your lord declared that he would surely send upon them until the day of resurrection those who would afflict them with the worst torment. indeed your lord is swift in penalty but indeed he is forgiving and merciful.
وإذ تأذن ربك ليبعثن عليهم إلى يوم القيامة من يسومهم سوء العذاب إن ربك لسريع العقاب وإنه لغفور رحيم