and remember when your lord announced the command that till the day of resurrection i will certainly send such oppressors against them who will inflict them with a dreadful punishment indeed your lord is swift in meting out punishment and indeed he is oft forgiving most merciful.
وإذ تأذن ربك ليبعثن عليهم إلى يوم القيامة من يسومهم سوء العذاب إن ربك لسريع العقاب وإنه لغفور رحيم