Taken from Tuhaf al-Uqul by ibn Shobah al-Harrani (p171-172):

Translation:

So then, fie and grief be on you, O group. When you appealed for our help grievously and we hurried for your help exhaustingly, you unsheathed against us a sword that had been in our right hands and ignited against us the fire that we had struck against your and our enemy. You therefore formed groups surrounding your allies and became the support of your enemies although they did not spread justice among you and you lost any hope in them. In addition, you noticed no heresy or new opinion that came out of us. Why did you –woe to you!- not leave us when swords were sheathed, malice was hidden, and the decision was not taken. But you hurried to the sedition like locusts and fell on it like the falling of butterflies (in fire). Damn and away with the idols of the umma, irregulars of the parties, deserters of the Book, expectorants of the Shaitan, distorters of the meanings, extinguishers of the traditions, avowers of the bastards, and the mockers who divided the Quran believing in some parts and rejecting others. By God I swear, your disloyalty is expected because it is entwined with your arteries and it recurred in your origins. You therefore are the bitterest fruit that causes its caretaker to choke and gives good taste for its usurper. God curse the disloyal ones who disregard their firm oaths after they have already appointed God as their Guarantor.