37:11
فَٱسْتَفْتِهِمْ أَهُمْ أَشَدُّ خَلْقًا أَم مَّنْ خَلَقْنَآ ۚ إِنَّا خَلَقْنَـٰهُم مِّن طِينٍ لَّازِبٍۭ
fa-is'taftihim ahum ashaddu khalqan am man khalaqnā innā khalaqnāhum min ṭīnin lāzibin
So [Prophet], ask the disbelievers: is it harder to create them than other beings We have created? We created them from sticky clay.
Then ask them (i.e. these polytheists, O Muhammad صلى الله عليه وسلم): "Are they stronger as creation, or those (others like the heavens and the earth and the mountains) whom We have created?" Verily, We created them of a sticky clay.