[1] He has been leading Jamia Islamia Darul Uloom Madania for over four decades and serves as the President of the National Fatwa Board, as well as the Khatib of Gulshan Central Mosque.

He has authored a four-volume Quranic exegesis named Burhan al-Quran and written more than two hundred other books, in addition to establishing Al-Jamia, a monthly magazine published in Dhaka.

[2] Among his instructors were Yusuf Banuri, Idris Merathi, Wali Hasan Tonki, Zafar Ahmad Usmani, Salimullah Khan, and Zakariyya Kandhlawi.

[10] The following year, when the Ministry of Home Affairs issued directives concerning religious sermons, he highlighted the importance of delivering Islamic teachings with wisdom, compassion, and moderation, rejecting any use of force or coercion.

The establishment of a Sharia-based council under Hasan’s leadership to guide religious and social matters was recommended, along with the need for a unified framework for Islamic groups and greater involvement of scholars in state affairs to ensure that reforms resonate with the community’s aspirations.

He further explained the principles of the Qur'an at a conference in Saudi Arabia on May 28, 1993, and spoke on the influence of Islam on European civilization at a seminar in Madina Mahad Imani on March 13, 1998.

On March 30, he highlighted the importance of Islamic education in countering foreign cultural influences at the Zul Hulaifa Ubai Ibn Ka'b Institute.

He visited London in 1999, where he was the keynote speaker at the Leicester Islamia Madrasa on August 22 and participated in various religious gatherings, including the Ijtima of Dawatul Haq.

In subsequent years, he spoke at notable gatherings, including the East London Mosque in 2000, and addressed topics such as Tasawwuf and the four schools of thought at various conferences.

[26] In 2009, he published Al-Raddul Jamil, a critique of the views held by Ahmad Al Ghamidi, head of Saudi Arabia's Committee for the Promotion of Virtue and the Prevention of Vice, who later revised his stance.

[25] Throughout his career, he authored over 200 works on various subjects, including Dawatul Haq and Dawat-e Tabligh, Islam and Modern Political Thought, Love for the Prophet’s Family, The Life of Abrar, The Life of Usmani, Al Burhanul Mu'iyad, Gift from Abrar, Gift from Sunnah, Ideal Doctrine, Maweze Hasana, and Search for the Straight Path.