- Country: India
- Genres: Drama, Family
- Release: 1958-01-01
- Director: B.R. Chopra
- Writers: Mukhram Sharma
- Language: Hindi
- Stars: Vyjayanthimala , Sunil Dutt , Radhakrishan , Leela Chitnis , Manmohan Krishna , Nandini , Munshi Munakka , Nissar , Ravikant , Uma Dutt
- Runtime: 137 min
- Awards: 2 wins & 4 nominations
- AKA: Sadhna (India) , The Penance , Sadhna
- Plot: Mohan ( SUNIL DUTT ) is the only bachelor son of his widowed mother. Mohan works as a professor. He is against prostitution and consider prostitutes as a black spot to the society. But due to some circumstances a prostitute Champabai ( VAIJYANTIMALA ) comes to his life in the form of Rajni. Will Mohan and his ailing mother accept Champabai as Rajni or not is the story.
- IMDB:tt0052154
Sadhna Cast · · · ALL
B.R. Chopra
Director
Vyjayanthimala
Champabai (as Vyjayantimala)
Sunil Dutt
Mohan
Radhakrishan
Jeevan Ram (as Radhakishan)
Leela Chitnis
Mohan's Mother