Aangan Ki Kali (1979)

Anmol (Rakesh Roshan) and Sunita (Lakshmi) are a happily married couple. However, Sunita has a serious heart condition. She could risk a dangerous operation or live only a few more years. Her medical condition could get worse if she ever gets pregnant. She falls in love with an orphan named Bhavana and wants to adopt her. But her husband wants Sunita to get better, so they can have their own children. He doesn't care about Bhavana and gets upset with her over her childlike behavior, but when she runs away from home, he goes after her and asks her to come home. Together, they convince Sunita to have the risky operation, from which she recovers. Anmol and Sunita adopt Bhavana, and they all live happily ever after.