Surah 10. Yunus, Ayah 47

Lit., "and when their apostle has come, a decision is made between them in all equity". This verse stresses (a) the continuity of religious revelation in mankind's history and the fact that in the long run no community, period or civilization (which latter is one of the meanings attributable to the term ummah) has been left without prophetic guidance, and (b) the doctrine that God does not punish "a community for its wrongdoing so long as its people are still unaware [of the meaning of right and wrong]: for all shall be judged according to their [conscious] deeds" ({6:131-132}).

 Either in this life to deliver the message or on the Day of Judgment to testify for or against them.

Every people or generation or nation had its Message or Messenger: Allah revealed Himself to it in some way or another. If that Messenger was ignored or rejected, or his Message was twisted or misused, the Day of Reckoning will come, when perfect justice will be done and the whole Truth revealed. The Unbelievers mockingly say: "If that is true, pray tell us when that Day will come!" The answer of the Messenger is: "It will come in good time: no one can either hasten or retard it. If you want me then to save you or if you fear that I shall harm you for your treatment of me, know that this matter is in the hands of Allah alone, Who will do perfect justice. Even in regard to myself, any harm or good that befalls me is by the command and in the power of Allah".