Abu Mansur al-Maturidi, who was a leading theologian and jurist of his time in Transoxiana (Ma Wara' al-Nahr) in Central Asia, was the founder of the Māturīdiyya theological school.
[1] Māturīdi based his theological opinions and epistemological perspectives on the teachings of the school's eponymous founder, Abū Ḥanīfa al-Nuʿmān (8th century CE).
[2] Therefore, unlike Ash'arism, Māturīdite theology has generally remained associated exclusively with only one Sunni school of law (madhhab), that Hanafites.
[3] According to Māturīdism, belief (ʾīmān) does neither increase nor decrease depending on observation of religious law.
Based on Surah Ṭā Hā (verse 112), if a Muslim does not perform the deeds prescribed by the Islamic law (sharīʿa), he is not considered an apostate as long as he doesn't deny his obligations.