وَدِينُ اللَّهِ فِي الْأَرْضِ وَالسَّمَاءِ وَاحِدٌ وَهُوَ دِينُ الْإِسْلَامِ.
The religion of Allah in heaven and on earth is one, and it is Islam.
Islam signifies submission to Allah and acceptance of His guidance. The divinely accepted religion has one true foundation; mutually contradictory beliefs cannot all be presented as equivalent alternatives to it.
Its claim to truth is established through Allah’s revealed declarations, which supply the basis for this belief.