Surah Al-Imran, ayah 85

3:85

وَمَن يَبۡتَغِ غَيۡرَ ٱلۡإِسۡلَٰمِ دِينٗا فَلَن يُقۡبَلَ مِنۡهُ وَهُوَ فِي ٱلۡأٓخِرَةِ مِنَ ٱلۡخَٰسِرِينَ ٨٥

Waman yabtaghi ghayral-islāmi dīnan falan yuqbala minhu wahuwa fil-ākhirati minal-khāsirīn

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.