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Say: 'Verily, should mankind and jinn come together to produce the like of this Qur'ān, [the like thereof] in terms of clarity and rhetorical excellence, they could not produce the like thereof, even if they backed one another', [even if one was] an assistant [of the other]. This [verse] was revealed as a refutation of their statement: 'If we wish we can speak the like of this' [Q. 8:31].