And for every ummat is a messenger. So when their messenger comes, it will be judged between them in justice, and they will not be wronged. They (disbelievers) say: “When will this promise come to pass,- if you should be truthful?” Say, “I possess not for myself any harm or benefit except what Allah should will. For every ummat is a [specified] term. When their time has come, then they will not remain behind an hour, nor will they precede [it].”