Al Baqarah, 137 Ayah
2:137
فَإِنۡ ءَامَنُواْ بِمِثۡلِ مَآ ءَامَنتُم بِهِۦ فَقَدِ ٱهۡتَدَواْۖ وَّإِن تَوَلَّوۡاْ فَإِنَّمَا هُمۡ فِي شِقَاقٖۖ فَسَيَكۡفِيكَهُمُ ٱللَّهُۚ وَهُوَ ٱلسَّمِيعُ ٱلۡعَلِيمُ ١٣٧
Fa'in 'Āmanū Bimithli Mā 'Āmantum Bihi Faqadi Ahtadaw ۖ Wa 'In Tawallaw Fa'innamā Hum Fī Shiqāqin ۖ Fasayakfīkahumu Al-Lahu ۚ Wa Huwa As-Samī`u Al-`Alīmu
So if they believe in the same as you believe in, then they have been [rightly] guided; but if they turn away, they are only in dissension, and Allah will be sufficient for you against them. And He is the Hearing, the Knowing.