Think about what happens to the clay if it becomes unsuited for the intended purpose. Why, the potter can make another type of vessel out of it or simply discard it!
فَيَهْوَهُ يُمَارِسُ سُلْطَتَهُ عَلَى ٱلْبَشَرِ بِتَعْدِيلِ تَعَامُلَاتِهِ مَعَهُمْ وَفْقًا لِتَجَاوُبِهِمْ .‏