He has participated in the invitation work of various international programs including Japan, India and the United Arab Emirates.

[6][7][8] Ahmadullah was born on December 15, 1981, in Bashikpur village of Sadar Upazila of Lakshmipur District.

He subsequently enrolled in the country's largest Islamic educational institution, Darul Uloom Hathazari Madrasa.

[2] When the Hatiya region was damaged by the 1988 floods, Ahmadullah left Noakhali and joined Darul Uloom Hathazari in Chittagong.

[11] He left Dhaka in 2009 and traveled to Saudi Arabia and joined West Dammam Islami Dawah Centre under the Ministry of Religion as a translator and preacher.

[16] His book Dua and Zikr of the Messenger of Allah (PBUH) has been distributed free of charge in more than 300,000 copies.