The film was started in 1966 and kept being delayed.
The film was previously titled "Bandagi" and "Anokha Pyar".
Phir Kab Milogi's song 'Kahin karti hogi' sampled
an instrumental by Herb Albert and Tijuana Brass - 'The
Lonely Bull.
In Guddi (1971) the shooting of a scene from the film (then probably titled as Anokha Pyar) is shown, as one of the shoots that Guddi (Jaya Bhaduri) watches
Tum Mujhse Roothe Ho.R.D. Burman developed the violin orchestra in the song's prelude to compose the mukhda of his song "Kya Hua Tera Wada" ("Hum Kisise Kum Naheen", 1977).