Muhammad ibn Musa al-Khwarizmi
Muhammad ibn Musa al-Khwarizmi (c. 780 – c. 850) was a non-Arab polymath from Persia.
He was looked down upon by respected Islamic scholars. Ibn Taymiyyah wrote about Khwarizmi:
انه وإن كان علمه صحيحا إلا إن العلوم الشرعية مستغنية عنه وعن غيره
Even if his science is correct, regardless, the Islamic sciences are dispensed of him and his likes.
مجموع الفتاوى: 9/214 - 215