Muḥammad b. Masʿūd al-ʿAyyāshī al-Samarqandī was among the shi’a scholars of the 4th/10th century. He first was Sunni but after studying Shi’a works, changed his faith to Shi’a. He then went to Kufa, Baghdad and Qom for education. Because of his great eagerness to learning and preaching religion, upon his return to Samarqand, he spent all the heritage of his father for dissemination of knowledge and hadiths. Al-‘Ayyashi had many works in exegesis, jurisprudence, Arabic literature and hadith. Tafsir al-‘Ayyashi is his most famous work.