Thanks to Vivek Kumar, we have this page from Madhuri Magazine 1967. Basically it says that when the film was announced, the editor received many letters about the announced film title. They then interviewed Dr Bharti who denied the movie had any connection with his novel. The producers did ask for his permission to make a film on his book, but he did not give permission. Hence the producers felt constrained to include the disclaimer shown in Musing 1515.
Now You Know!