Do dishayen (1982)

Do Dishayen is the story of a wealthy businessman played by Dharmendra, whose wife (Hema Malini) leaves him after the birth of their kid. When his kid craves for mother's love, Dharmendra mages to calm him down by lying about the whereabouts of his mother. One fine day, the kid walks into a store and finds a woman who looks exactly like his mother. He convinces her to come to his house but before he could introduce her to his father, she goes away. Watch the movie to find out the identity of this mystery woman?