Al-Hijr 15:33

Qala lam akun li-asjuda libasharinkhalaqtahu min salsalin min hama-in masnoon

He said, "Never would I prostrate to a human whom You created out of clay from an altered black mud."

He said, “I am not such that I should prostrate myself before a mortal whom You have created from a ringing clay made of decayed mud.”