This song is often cited as an example of secularism in Bollywood - a Hindu bhajan sung (Mohd. Rafi), written (Shakeel Badayuni) and composed (Naushad) by Muslims.[MR3]
The tune of this song may have been inspired by the Hindi film song "Hari Base Sakal Sansara" ("Achhut Kanya", 1936).[1]