(Al-Hijr) 15 : 33
قَالَ لَمْ أَكُنْ لِأَسْجُدَ لِبَشَرٍ خَلَقْتَهُ مِنْ صَلْصَالٍ مِنْ حَمَإٍ مَسْنُونٍ
He said: "Never would I prostrate to a man whom You created out of sounding, adhesive and foul-smelling black clay".
See explanation 7: 12.