Quran 8:22 — The Spoils of War (Al-Anfal)

The worst creatures in the sight of GOD are the deaf and dumb, who do not understand.

[8:21] Do not be like those who say, "We hear," when they do not hear.

[8:23] Had GOD known of any good in them, He would have made them hearers. Even if He made them hearers, they still would turn away in aversion.