Trishagni (English: The Sand Storm) is a 1988 Hindi film directed by Nabendu Ghosh. The film was based on a historical short story set some time after the Asokan Missions, Moru O Sangho written by Saradindu Bandopadhyay, and inspired by Buddha's Fire Sermon, and starred Nana Patekar, Nitish Bharadwaj, Pallavi Joshi and Alok Nath in the lead roles. The film received critical acclaim, and was awarded the 1988 National Film Award for Best First Film of a Director, "For excellent exploration of complex philosophical theme for the first time in Indian cinema.".