Amitabh Bachchan will work for free in a forthcoming film starring Malayalam superstar Mohanlal.

"Mohanlal, great exponent of his art and craft, one of the finest actors of the country, from Kerala and Malayalam cinema had come over to finalize dates and schedules for the film he is making directed by Capt Ravi," Amitabh posted on his blog.

"It's a small guest appearance and I had agreed. They had come over to officially sign me on and make payments etc...Payments? For a guest appearance of 3 days? With Mohanlal who has always had my greatest admiration? No way !! I don't charge money for such acts. And told them so.

"I shall just gloat in the honour that I shall derive by working in a Malayalam film and that too with the exceptional Mohanlal."

The yet-to-be titled film will be shot at Ooty in Tamil Nadu.