This song was not included in the film because Meena Kumari was too unwell to shoot it and because Gulzar liked the song but did not want to include it in the background.[1]
This song was Salil Chowdhury's adaptation of the Bengali song "Meghla Nishi Bhorey" composed by Kazi Nazrul Islam. "Meghla Nishi Bhorey" has been recorded by many artists. The earliest among them was probably S.D. Burman.[2]