The Big B took to Twitter to support the film, directed by Hindi novelist and former journalist Zaigham Imam.
"'Dozakh', a sensitive film made by sensitive people... wishing you all the best," the 72-year-old tweeted.
"Dozakh - In Search of Heaven", which has released at select theatres via PVR Director's Rare -- that supports independent movies -- is based on an eponymous book penned by Imam himself.
The movie is about a Muslim father and son. The father is a cleric and a true follower of Islam. He doesn't appreciate the fact that his son is friends with a Hindu priest. This results in him losing his son and realising that he needs his son and not the religion.
The film has received rave reviews at film festivals and features actors Lalit Mohan Tiwari, Nazim Khan, Pawan Tiwari, Garric Chaudhury, Ruby Saini, Irfaan Rizvi, Jugendra Singh and Khushboo Seth.