In the Name of Allaah, the Most Gracious, the Ever Merciful…
The famous fifth-century medical expert and philosopher, Ibn Sina, known to the West as “Avicenna”, is often credited as being one of the greatest Muslim scientists in history. His name is a celebrated one in many Muslim circles, and even hospitals and institutions of learning are named after him out of respect and admiration for his achievements.
While many Muslim scientists throughout history truly did pioneer many important medical and scientific breakthroughs, Muslims need to step back and re-examine what they have been led to believe about Ibn Sina specifically – Is it factually correct? Was he even a Muslim?
Shaykh al-Islaam Ibn Taymiyyah on Ibn Sina
Aboo ‘Alee Al-Husayn ibn ‘Abdillaah ibn al-Hasan ibn ‘Alee ibn Sina (d.428) was born to a severely deviant Ismaa’eelee (Shiite) family, known for their severe blasphemy and hypocrisy, as mentioned by Shaykh al-Islaam Ibn Taymiyyah. In fact, as Ibn Taymiyyah said:
وأحسن ما يُظهرون دين الرفض وهم في الباطن يُبطنون الكفر المحض
“The best thing they showed openly was ar-Rafdh (being Raafhidah Shiites), while they concealed pure, absolute disbelief inwardly.” 
Ibn Taymiyyah confirmed this by mentioning that Ibn Sina himself identified his own family, his father, and his brother to all be from this severely deviant group that was exposed and declared outside of Islam by many scholars.
Ibn Taymiyyah further detailed how Ibn Sina attempted to blend what he learned from the deviant claimants to Islam, the Mu’tazliah and Raafidhah, with the polytheistic philosophy of Aristotle, and when he did so he deviated even further, Continue reading