Imaams of Guidance
Shaykh Rabee' bin Haadee (may Allah preserve him) mentions in Raddu kullil-munkaraat wal-ahwaa' wal-akh-taa'i manhajun shar'ee (ppg 24-27):
"There confronted and opposed these groups- individuals and jamaa'aat - Imaams of Guidance and signposts in the darkness from the choicest of this Ummah. So they refuted their falsehood and misguidance. So they [the people of innovation] did not come with something from misguidance, nor a doubt except that they refuted it and clarified it's falsity, and clarified the Haqq with a clarification that was clear and following the Qur'aan and Sunnah in showing the falseness of falsehood and it's destruction, and manifesting the Haqq.
And indeed their actions and their jihaad in repelling the mukhaalafaat, and clarification of the condition of its people, and clarification of the great distance of these mukhaalafaat from the guidance of the Book and the Sunnah, and clarification of the rulings of these mukhaalafaat and the rulings of its people from declaring them to be innovators and making inkaar upon them has been recorded.
Indeed they carried out this clarification based upon naseehah to Allaah and His Book and His Messenger and the leaders of the Muslims and their common folk, and preservation of their Deen in numerous books, whether it was in the field of'Aqeedah, like in the books of 'Aqaa'id, or Ahkaam, like in the books of Fiqh and explanation of Hadeeth, and in the category of the narrations and conveying the Sunnah from Allaah's Messenger (Sallallaahu 'alayhi wasallam) like in the books of Rijaal and 'Illal, and the books in that are in that are innumerable."