Jamaat-ud-Dawah chief Saeed told reporters here today that thousands of people would participate in the congregation starting on December 4 at the ground of Minar-i-Pakistan monument.
Pakistan Railways is operating the first train from today from Hyderabad, Sindh province, that will arrive in Lahore tomorrow night.
Another train will leave from Karachi and arrive here on December 4. The two special trains will also take the people back to their hometowns on the conclusion of the congregation.
Pakistan Railways spokesman Rauf Tahir said there had been a "uniform policy" to run special trains on the request of political and religious parties.
"The Railways has a uniform policy for everyone. Pay and hire a train. Two special trains will be run for JuD congregation but not free of cost," he said.