The "Akheri Munajat" of the first phase of Bishwa Ijtema will be offered on Sunday, ending the three-day annual Muslim congregation.
Tens of thousands of the Muslims from home and abroad are participating in the second largest congregation of the Muslims after Hajj.
Around three million people from all walks of life are expected to join the Akheri Munajat on Sunday.
President M Abdul Hamid, Prime Minister Sheikh Hasina, ministers, MPs, political leaders and senior officials are expected to join the concluding prayer.
Loudspeakers have been set up at many places in and outside the Ijtema ground to facilitate people to listen to the munajat.
About 7,000 devotees from over 50 countries, including India, Pakistan, Saudi Arabia, Arab Emirates, Qatar, Egypt, Jordan, Algeria, Oman, Yemen, Sudan, Palestine, Tunisia, Bahrain, France, Kuwait, Somalia, Kenya, Germany, Switzerland, Canada, the United States, Iraq and Iran are taking part in the congregation, organisers said.
Tight security measures have been taken to ensure peaceful conclusion of the Ijtema.
Measures have been taken to ensure supply of electricity and water in and around the Ijtema venue. Proper sanitation and health services for the devotees have also been ensured.
Special measures have been taken for transportation of the devotees. Medical camps have also been set up to support the participants, if required.
The second phase of the Ijtema will be held from January 15 to 17, according to BSS. - Idrak