وَتَقَطَّعُوا أَمْرَهُم بَيْنَهُمْ كُلٌّ إِلَيْنَا رَاجِعُونَ
[21:93]
And they broke their religion (into sects) between them: to Us shall all come back.
But (later generations) cut off their affair (of unity), one from another: (yet) will they all return to Us.
And they have broken their religion (into fragments) among them, (yet) all are returning unto Us.