Abubakar Mahmud Gumi (5 November 1922 – 11 September 1992) was an outspoken Islamic scholar and Grand Khadi of the Northern Region of Nigeria (1962–1967), a position which made him a central authority in the interpretation of the Sharia legal system in the region.
He was a close associate of Ahmadu Bello, the premier of the Northern region in the 1950s and 1960s and became the Grand Khadi in 1967, the position was abolished.
Gumi emerged as a vocal leader during the colonial era, where he felt the practice of indirect rule had weakened the religious power of Emirs and encouraged westernization.
Beginning in the 1960s, public conflicts emerged between him and leaders of the Sufi brotherhood, some of whom he later debated on television programs in the 1970s and 1980s.
By that time, he had managed to keep his ideas in the spotlight by holding Friday talking sessions inside the Kaduna Central Mosque (Sultan Bello Mosque).
He used the sessions to revive his criticism of established authorities based on his views of a back to the source approach or the need to embrace a puritanical practice of Islam.
He also criticized harshly the involvement of mysticism and the resulting syncreticized practice of the Sufis.
he has an unclear number of children, however his first born and must popular child happens to be Dr Ahmad Gumi who succeeded his father as the scholar of the central mosque Kaduna (Sultan Bello), Dr Ahmad Gumi is a certified medical doctor from Ahmadu Bello University Zaria and was a former military officer, he left the military and travel to study fiqh (Islamic jurisprudence) at the umm Al-Qura University in Mecca, Saudi Arabia where he obtained his PhD.
Abubakar Gumi has proven not to have anything to do with the present Nigerian sunni movement of Boko haram because of his strong support for democracy, civil law and western education since his early years as a teacher, he's often quoted to have said, "during election, voting is more necessary than to pray".
Gumi is a follower of the Maliki school of thought, this was derived through his writings including his Qur'anic tafsir (Raddul azhaan ila ma'anil kur'an)
and other books like (hullu nizam ala nuzuul isa).