For versatile actor Nawazuddin Siddiqui, who will be seen playing Dashrath Manjhi in Ketan Mehta's "Manjhi - The Mountain Man", it was the toughtest role of his career.
Set in 1960 in Bihar and based on a true story, the film is about a man who carved a path through a mountain in memory of his wife.
"It is the toughest and passionate love story. It was toughest characters of my life - both physically and mentally," said the actor here in an interview Wednesday.
Nawaz said the thought that a man carved a path through a mountain for his love and worked relentlessly for 22 years "is very tough in itself".
"And to take one's mind to that thought was very tough," added the actor.
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The film also stars Tigmanshu Dhulia, Prashant Narayanan and Radhika Apte in key roles.
Nawaz will also be seen in "The Lunchbox" releasing Sep 20.