The duo is facing allegations of fraudulently misappropriating shareholders' money and involvement in money laundering.
"PTI’s top leadership should take this initiative now to unmask such elements," he added.
"Is your case so week that you had to use media for conducting my trial," he asked.
“It is regrettable that we are here seeking justice from Tehreek-e-Insaf,” he remarked.
Earlier, Tareen approached the court along with provincial ministers and MPAs of PTI, who pledged to support him.
Raja Raiz, provincial minister Numan Langrial, Lala Muhammad, MPA Tahir Randhawa and several others PTI lawmakers were present on the occasion.
Talking to media person, Raja Riaz advised Prime Minister Imran Khan to "not lose a friend like Tareen as he had a role in forming the government.