Currently, the eighth season of "Kaun Banega Crorepati" and Shoojit Sircar's "Piku" are keeping the 71-year-old busy.
"DAMN!! Just discovered... Down with fever!! (sic)," he tweeted Saturday night.
"Still down! Shoot cancelled! Not happy about that! But shall persevere and be up for it by the morrow ... Resting," he posted on Twitter Sunday.
He also thanked his fans for sending good wishes for his recovery.
