Shaikh Saalih al-Fawzaan hafidhuhallah said:
“Refuting the one who opposes the truth is the Sunnah of the Salaf. For the Salaf used to refute those who oppose the truth and these books are present. Imam Ahmad refuted the Zanaadiqah and the innovators. Shaikh ul-Islam Ibn Taymiyyah refuted the philosophers and the scholars of Kalam and the Sufis and those who worshipped the graves. Imam Ibn Qayyim refuted and many of the scholars refuted those who opposed the truth in order to clarify and make apparent the truth for the people so that the Ummah would not be misguided and follow those who are mistaken and those who oppose the truth. This is from the advice for the Ummah”
(Ajweebatul Mufeedah ‘an Asilatul Manaahij al-Jadeedah pg.90)
Translated by
Faisal Ibn Abdul Qaadir Ibn Hassan