Off Topic: Whats name of this film

Reminds me of one dial. from Hindi film starring Utpal Dutt, Amol Palekar and Shatrughan Sinha, Swaroop sampat (don't remember the name) where shatru is Utpal's son and he says about the girl

Shatrughan Sinha " Pitaji, maini usko juban di hai, ki main usi se shadi karoonga"

Utpal: Tum hote kaun ho mere se bina puchhe, Khandan ki koi bhi cheez dene wale, Vaada karo ki tum us ki kothi ki taraf muh bhi nahi karoge

Shatrughan Sinha: Ji Pita Ji

Utpal: Vaada karo ki tum us ki kothi ki taraf muh karke @#$%*#$ bhi nahi karoge.

Shatrughan Sinha: Ji Pita Ji

Thats what is going to happen between Gulabo and Rajbir.

Can you tell me and others name of this Film . Highly recommended. Must see if you get a chance.