Mumbai, Feb 12 (IANS) Megastar Amitabh Bachchan, who underwent two abdominal surgeries Saturday, tweeted fans about his condition as soon as he could from the hospital bed and thanked them for their wishes, which he feels never fails.

Big B's scheduled abdominal surgery went off smoothly Saturday morning at the SevenHills Hospital here. His abdominal pain was due to an injury he suffered during shooting of "Coolie" in 1982.

"Took long because 2 surgeries had to be done on either side..yes there is pain, but nothing good in life ever achieved without it!," Big B tweeted.

"Back ..!! Thank you for your prayers.. your love and wishes never fail..indebted for life, one that I shall never be able to pay back," the 69-year-old wrote.

When son Abhishek saw his father's tweet, he reprimanded him and called him Auro, the character that Big B played in the film "Paa" where the father-son was in a role reversal.

"It's past your bedtime Auro!!. Stop tweeting and back to bed. :-)," tweeted Abhishek.

On that Big replied good-humouredly, "OK ... Paa !! Am already in bed .. been on it the whole day .. "