"The Sunday well wishers! Constant and so regular... touched... walked down to greet them," Amitabh posted on Twitter Sunday night.
"Thank you people of love. I have no other expression but this for gratitude... Walking out for the first time after hospital... not recommended, but for well wishers, a must," added the actor, who refers to his social networking mates as his "extended family".
Clad in a white kurta-pyjama and a cream shawl, the 69-year-old waved out to his fans. Among them was a man, who imitated Big B's "Kaun Banega Crorepati" style, to which Amitabh wrote: "...and imitations abound ... not too far away from the real i should say... ha ha."
The veteran actor returned to his home from hospital Feb 23. He was admitted to the Seven Hills Hospital Feb 11 and underwent two abdominal surgeries, following which he complained of acute pain and was kept under observation.