He wrote: "Beginnings have the innocence that experience can't buy. My best wishes to @dulQuer , @mipalkar for joining the karwaan. ' Two karwaans ' .... Mine and the movie !! @MrAkvarious @RSVPMovies @RonnieScrewvala."
The whole nation received a jolt when Irrfan tweeted about his illness, which he later confirmed was a rare form of cancer, neuroendocrine tumor.
Deepika Padukone speaks on Piku co-star Irrfan Khan’s RARE disease
The actor, who is undergoing treatment for cancer abroad also wrote, "The unexpected makes us grow, which is what the past few days have been about."
Karwaan stars Irrfan Khan, Mithila Palkar, Malayalam actor Dulquer Salmaan in the lead roles.
The film will hit the screens on August 10, 2018.