Bachchan, 72, said he has no words to describe the experiences he went through during the shooting of the Yash Chopra-directed film.
"Silsila 34 years... Khuddar... And it all comes back with such detail that a narration of it would require the space of a space mission... But... It must be done some day... Here, there wherever... It must... Before, as many predict, I lose my brains!!," he wrote on his blog.
This was the last film to feature Rekha with Amitabh Bachchan.