The romantic film revolves around a poor villager played by Rishi, who faces a family's wrath for pursuing the love of an upper class widow essayed by Padmini Kolhapure.
"31st July 1982. Prem Rog. 33 years back. Thank you all for your patronage," the elated actor tweeted.
Directed and produced by Raj Kapoor, "Prem Rog" also stars Shammi Kapoor, Tanuja, Nanda, Raza Murad and Om Prakash.
Rishi and Padmini have also been seen in movies like "Zamane Ko Dikhana Hai" in 1981, "Yeh Ishq Nahin Aasaan" in 1984, "Hawalaat" in 1984" and "Pyar Ke Kabil" in 1987.