Ali 'Imran 3:85

Waman yabtaghi ghayra al-islamideenan falan yuqbala minhu wahuwa fee al-akhirati minaalkhasireen

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.

Whoever seeks a faith other than Islam, it will never be accepted from him, and he, in the Hereafter, will be among the losers.