Quran 37, As-Saffat (Those Ranged in Ranks)

37:11Then ask them (O Muhammad): Are they stronger as a creation, or those (others) whom we have created? Lo! We created them of plastic clay.

فَاسْتَفْتِهِمْ أَهُمْ أَشَدُّ خَلْقًا أَمْ مَنْ خَلَقْنَا إِنَّا خَلَقْنَاهُمْ مِنْ طِينٍ لَازِبٍ