Abdur Razzaq started his teaching career in 1955.[1] He became the Shaykh al-Hadith (senior professor of hadith) of the Jamia Uloom-ul-Islamia after Nizamuddin Shamzai, and the chancellor after the assassination of Habibullah Mukhtar in 1997.[3][4] He was made a member of the working committee of the Wifaq ul Madaris in 1997 and appointed its vice-president in 2001. He later served as its interim president for nine months following the death of Saleemullah Khan. He was appointed the president on 5 October 2017.[1]
In August 2016, speaking to a congregation at the Birmingham Central Mosque, Abdur Razzaq said that, "Islam is complete and it means that nothing can be added, removed or altered in it". He maintained that the people opposing the finality of prophethood have disconnected themselves from Muhammad.[6]