Here's why:
* Multiple Versions: The song has been recreated and sung by many artists over the years. It's originally from the film "Teesri Kasam" (1966) and has been covered by artists like Kishore Kumar, Asha Bhosle, and others.
* Unclear Original: The original song, "Tum Haseen Main Jawaan" from "Teesri Kasam" was composed by Kalyanji-Anandji and penned by Hasrat Jaipuri. The exact date of its creation within the film's production process is unclear.
Therefore, to be more specific, you need to clarify:
* Which version of the song are you interested in? The original from "Teesri Kasam" (1966)? A later cover?
* Are you looking for the date of its release, or the date it was composed?
Once you provide this information, I can give you a more precise answer!