Ranveer shared a glimpse of the letter on Twitter and Instagram, but did not reveal the content written by Big B in it.
"Mujhe mera award mil gaya. Amitabh Bachchan. (I have got my award)," Ranveer wrote alongside the photograph of the letter.
The letter comes in the wake of the appreciation Ranveer has been getting for his portrayal of Delhi Sultan Alauddin Khilji in "Padmaavat", a magnum opus by Sanjay Leela Bhansali.
The film, which also stars Deepika Padukone, Shahid Kapoor, Aditi Rao Hydari and Jim Sarbh, since its release on January 25, had minted Rs 114 crore till January 28 -- despite some states deciding against its screening in view of protests by Shri Rajput Karni Sena.
It is based on 16th century poet Malik Muhammad Jayasi's famed "Padmavat".
For Ranveer, along with the acclaim that his portrayal has brought to him, the film has spelt success at the box office as it delivered his career-best opening on Day 1 -- Rs 19 crore.
His biggest single-day collection of Rs 32 crore was registered on Republic Day on January 26. And "Padmaavat" has also marked his fastest Rs 100-crore mark in four days.