The song is sung by Arijit Singh and written by Kumaar.
Film's lead actor Farhan Akhtar will be seen playing a poet while humming the song.
The movie, directed by Ranjit Tiwari, showcases Farhan aka Kishen Mohan Girhotra as an aspiring Bhojpuri singer and gets caught in a tragedy that changes his life forever.
The film is set against the backdrop of a jail that thrives on ambition, passion, friendship and determination.
The trailer of the film, including its earlier released songs 'Kaavaan Kaavaan' and 'Teen Kabootar,' have generated immense excitement amongst the audience.
The film is produced by Viacom18 Motion Pictures, Emmay Entertainment and Motion Pictures.
The movie, which also stars Diana Penty, Deepak Dobriyal, Ronit Roy and Gippy Grewal, is all set to hit the theatres on September 15.