The life and activity of an outstanding scholar Ubaydullah Ibn Masud in Fiqh

This article presents one of the scholars in Fiqh (the theory or philosophy of Islamic law, based on the teachings of the Koran and the traditions of the Prophet) is Ubaydullah ibn Masud Sadrush shari'a al-Asghar ibn Mas'ud ibn Tajush shari'a Mahmud ibn Jamaliddin Ubaydullah al-Mahbubi al-Bukhari. When we study his scientific heritage, we can admit that he was the master of not only the science of jurisprudence, but also many fields of science such as hadith, maturity, tafsir, and literature in Movaraunnahr. Mukhtasar ul-viqaya written during the Mahbubi dynasty in the field of jurisprudence and his commentary Sharh ul-viqaya is still widely used by scholars.