Al-Kahf 7

إِنَّا جَعَلْنَا مَا عَلَى ٱلْأَرْضِ زِينَةً لَّهَا لِنَبْلُوَهُمْ أَيُّهُمْ أَحْسَنُ عَمَلًا

innā jaʿalnā mā ʿalā l-arḍi zīnatan lahā linabluwahum ayyuhum aḥsanu ʿamalan

Indeed, We have made that which is on the earth adornment for it that We may test them [as to] which of them is best in deed.