The finality of Islam as the complete way of life

وَمَن يَبْتَغِ غَيْرَ ٱلْإِسْلَـٰمِ دِينًا فَلَن يُقْبَلَ مِنْهُ وَهُوَ فِى ٱلْـَٔاخِرَةِ مِنَ ٱلْخَـٰسِرِينَ

And whoever desires other than Islām as religion - never will it be accepted from him, and he, in the Hereafter, will be among the losers.