But they say, "[The revelation is but] a mixture of false dreams; rather, he has invented it; rather, he is a poet. So let him bring us a sign just as the previous [messengers] were sent [with miracles]."
And We sent not before you, [O Muḥammad], except men to whom We revealed [the message], so ask the people of the message [i.e., former scriptures] if you do not know.