The origional. cast of this film was Manoj Kumar, Rajesh khanna, Shatrugan Sinha and Hema Malin. This film has music by Shanker Jaikishan, the last major big film of their's.

Shanker-Jaikishan were the regular music composers of filmaker Sohanlal Kanwar, from 1970s Be-Imaan, Pehchan to this film. Even after Jaikishan, he continued to take Shanker from Sanyasi.

Shatrughan Sinha and Rajesh Khanna kept arriving late on the sets causing Sohanlal Kanwar to alot of tension. There was a joke on the films sets as to see who would come late.

Heroines like Tina Munium Ambani, Jaya Prada and Rati Aghnihotri. All o then compete to men

Manoj Kumar was annoyed with Sohanlal Kanwar as he took Rajesh Khanna for the lead role. The writers Mirza Brothers wrote Dhanwan as Rajesh Khanna in mind and it was their condition was that Rajesh Khanna will be play the lead role in Dhanwan as it suites him,, who ever takes the script. So Sohanlal Kanwar had to sign Rajesh Khanna for Dhanwan

Manoj Kumar was annoyed with Sohanlal Kanwar as he took Rajesh Khanna for the lead role. The writers Mirza Brothers wrote Dhanwan as Rajesh Khanna in mind and it was their condition was that Rajesh Khanna will be play the lead role in Dhanwan as it suites him,, who ever takes the script. So Sohanlal Kanwar had to sign Rajesh Khanna for Dhanwan. So Manoj Kumar didn't do Paapi Ka Pet Ka Sawaal Hai.