In the mid- 1960s, Shailendra invested heavily in the production of the movie "Teesri Kasam" (1966), which won the National Film Award for Best Feature Film.
In the mid- 1960s, Shailendra invested heavily in the production of the movie "Teesri Kasam" (1966), directed by Basu Chatterjee and starring Raj Kapoor and Waheeda Rehman. The film won the National Film Award for Best Feature Film.