Quran 11:13 — Hud (Hud)

If they say, "He fabricated (the Quran)," tell them, "Then produce ten suras like these, fabricated, and invite whomever you can, other than GOD, if you are truthful."*

[11:12] You may wish to disregard some of that which is revealed to you, and you may be annoyed by it. Also, they may say, "How come no treasure comes down to him, or an angel?" You are only a warner; GOD controls all things.

[11:14] If they fail to meet your challenge, then know that this is revealed with GOD's knowledge, and that there is no god except He. Will you then submit?