فَإِنْ آمَنُوا بِمِثْلِ مَا آمَنْتُمْ بِهِ فَقَدِ اهْتَدَوْا ۖ وَإِنْ تَوَلَّوْا فَإِنَّمَا هُمْ فِي شِقَاقٍ ۖ فَسَيَكْفِيكَهُمُ اللَّهُ ۚ وَهُوَ السَّمِيعُ الْعَلِيمُ 137
So if they believe as ye believe, they are indeed on the right path; but if they turn back, it is they who are in schism; but Allah will suffice thee as against them, and He is the All-Hearing, the All-Knowing.