Sura al-Baqara 2:137

فَإِنْ ءَامَنُوا۟ بِمِثْلِ مَآ ءَامَنتُم بِهِۦ فَقَدِ ٱهْتَدَوا۟ وَّإِن تَوَلَّوْا۟ فَإِنَّمَا هُمْ فِى شِقَاقٍ فَسَيَكْفِيكَهُمُ ٱللَّـهُ وَهُوَ ٱلسَّمِيعُ ٱلْعَلِيمُ

fa-in āmanū bi-mithli mā āmantum bihi fa-qadi ihtadaw wa-in tawallaw fa-innamā hum fī shiqāqin fa-sa-yakfīkahumu allāhu wa-huwa l-samīʿu l-ʿalīmu

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.