He was out in a similar fashion in 2014 when Sri Lanka's Sachitra Senanayake dismissed him in the same fashion.
Kings XI Punjab began their IPL journey on a successful note as they defeated Rajasthan Royals by 14 runs. RA had no intention of delivering the ball - so it should have been called a dead ball. It was a view shared by a number of people on social media.
Ashwin had few supporters after the Mankad, with a raft of respected cricketers condemning his actions. Fair play? Would you have done it?
"Last point on the embarrassing & disgraceful act of @ashwinravi99!"
"You are not in the crease and you've been upsetting my rhythm", an animated Ashwin said in the heat of the moment. "Any player in the game that does that to anyone is an embarrassment to the game & as captain it's even more disgraceful!"
The Kings won by 14 runs after veteran West Indies opener Chris Gayle played a typically aggressive innings of 79 from 47 balls in their score of 184-4.
Buttler's dismissal brought former Australian captain Steve Smith to the crease and Rajasthan ultimately failed to reach their target.
Gayle also tucked into Ben Stokes, smashing him for six over long-off and another two boundaries in an eventful over before hooking the England all-rounder straight to Rahul Tripathi. Sam had a bad day with the ball, but he came back well.
Ravi Ashwin let Jos Buttler know he was out of crease as the crowd erupted.
The way I see it he was not stepping out too much! Buttler was furious but Ashwin was adamant prompting the umpires to get together and as per the rules of the game, the batsman had to leave the field. I have been in a good form, so it was good to start on a winning note.
Smith showed no signs of being troubled by his elbow when he nonchalantly flicked Curran for six, but KL Rahul held an outstanding catch on the run in the deep to remove the former Australia captain.
Rajasthan lost seven wickets for just 16 runs in less than three overs after being in cruise control, Mujeeb Ur Rahman taking 2-31 with Stokes among the batsmen to miss out.