And even if there were a Quran with which the mountains were made to pass away, or the earth were travelled over with it, or the dead were made to speak thereby; nay! the commandment is wholly Allah's, Have not yet those who believe known that if Allah please He would certainly guide all the people? And (as for) those who disbelieve, there will not cease to afflict them because of what they do a repelling calamity, or it will alight close by their abodes, until the promise of Allah comes about; surely Allah will not fail in (His) promise.

Say: Have you considered your associates which you call upon besides Allah? Show me what part of the earth they have created, or have they any share in the heavens; or, have We given them a book so that they follow a clear argument thereof? Nay, the unjust do not hold out promises one to another but only to deceive.