The Islamic concept of belief in the 4th/10th century : Abū l-Lait̲ as-Samarqandī's commentary on Abū Ḥanīfa (died 150/767) al-Fiqh al-absaṭ - Abū Ḥanīfah, -767 or 768 (Studia culturae Islamicae., 1995)