Ibn Sīnā—together with his household and followers—was known among the Muslims for open heresy; the best face they could show was the creed of the Rāfiḍah, while inwardly they concealed unalloyed unbelief.

Muslim scholars therefore composed numerous works, both extensive and concise, to expose their secrets and tear away their veils, and they combated them with word and deed, for these people were more deserving of such opposition than the Jews or the Christians. It would suffice to cite only The Unveiling of Secrets and Rending of Veils by Qadi Abū Bakr Muḥammad ibn al-Ṭayyib, the book of ʿAbd al-Jabbār ibn Aḥmad, the treatise of Abū Ḥāmid al-Ghazālī, along with the writings of Abū Isḥāq, Ibn Fūrak, Qadi Abū Yaʿlā, Ibn ʿAqīl, and al-Shahrastānī.