Fa in aamanoo bimisli maaa aamantum bihee faqadih tadaw wa in tawallaw fa innamaa hum fee shiqaaq; fasayakfeekahumul laah; wa Huwas Samee'ul Aleem
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.