Always in news for his weird statement Ram Gopal Verma's book 'f' is in discussion these days. Earlier Ramu attracted the attention of people with his Book Title. Now afte this book has some talks Amitabh Bachchan's, it has again come in discussion. Ram Gopal Verma says that it was a mistake to cast Big B in Nishabd and Aag. In this book, Ram Gopal Verma wrote that, "I was impressed with the performance of Amitabh Bachchan in 'Khuddar', but I feel cast him in Nishabd and Aag was my one of the mistake." He wrote, "Obviously, Amit Ji would have also regret that how could he trust me, but I misplaced him. Ramu revealed that during the shooting of Nishabd, Amitabh's makeup artist told him that nobody wants to see him in this look and this film will not work and it was true.