Does warning against deviant sects cause fitnah (trial, discord or temptation)?

Question:
Some people say that mentioning the old and contemporary deviant sects, and warning against them and their followers, divides people and causes fitnah (trial, discord or temptation). Is this statement correct?

Answer:
The fitnah (trial, discord or temptation) is the same fitnah (trial, discord or temptation). The one who says this does not know that the very sects and the very differences are the fitnah (trial, discord or temptation). We warn against the fitnah (trial, discord or temptation) from which the Messenger of Allah (peace and blessings be upon him) warned. The Qur'an warned against the disbelievers and warned against the people of misguidance. Then he says it divides. It divides. How can we bring together an innovator and a follower of the Sunnah? They will never come together because they are opposites. People will not come together except upon the truth. People will not come together except upon the truth. That which brought them together at the beginning of Islam is what will bring them together at the end of affairs, as the Imam of the City of Migration, Malik ibn Anas (may Allah have mercy on him), said: "The end of this Ummah (the Muslim community) will not be set right except by that which set right its beginning." People will not be set right and brought together except by the truth. As for them coming together while they are divided and differing from the truth, that is never possible.