The Bollywood star-turned politician, once known for his smoking style onscreen, quit the habit after realising that it was hurting his health.
"Years ago I gave up smoking. Rajini doesn't smoke anymore. I want Ambareesh to give up smoking for his own good and for his fans," Sinha said.
The three stars were together on the occasion of birthday celebration of Ambareesh in Bangalore on May 30. Actress Jaya Prada also attended the bash.
Sinha, who served as Union Health Minister in the NDA government, said he was a heavy smoker once. "During the shooting of a fight scene in film 'Mere Apne' with Vinod Khanna, I felt loss of stamina and decided to give up smoking and never touched it after that," Sinha said.