These prisoners are generally those who have served more than their jail term because they cannot pay their fine due to poverty or some other reason.
The superstar, who himself had experienced life behind the bars, looks forward to free these inmates and his organisation has written to jail authorities offering their help.
In 2002, Salman was arrested for rash and negligent driving after his car ran into a Mumbai bakery.
Charges of culpable homicide were laid against him, but later dropped after he was found not guilty.
In 2006, Salman was sentenced to one year in prison for hunting a Chinkara but was granted bail after spending three days in prison.
Salman and the jail authorities are now awaiting the legal green signal and a no objection certificate (NOC) from the administration.