Jadeja, the world's No.1 Test bowler on the ICC rankings, had been India's day four hero, collecting a five-wicket haul to help his side to a victory that was not just the visitors' largest against Sri Lanka but one which secured a series win.
India tightened its grip on the second Test against Sri Lanka despite a fighting century by Kusal Mendis during the hosts' follow-on in Colombo on Saturday.
Though Mendis was dismissed towards the end of the day, Karunaratne is still at the crease with Malinda Pushpakumara.
Following on Day Four at the Sinhalese Sports Club (SSC), Sri Lanka came out with a spirited performance and showed some signs of promise in their second innings.
It was a first victory by an innings or more for India in Sri Lanka and, following their biggest victory by runs in Galle last week, ensured an eighth straight series triumph under Virat Kohli.
Sri Lanka is still 230 runs behind India in the second innings. It seems like that but in reality it was just a year ago, during July-August, that they won the three Tests by impressive margins - 106, 229 and 163 runs.
WICKET! Ravindra Jadeja gets the wicket of dangerman Dimuth Karunaratne, and once again, Team India get the breakthrough.
Rory McIlroy reportedly fires his caddie with PGA Championship looming
This morning's news comes just weeks after Phil Mickelson ended his relationship with caddie Jim "Bones" Mackay after 25 years. The 28-year-old won there in 2014, the year he won The Open and the PGA Championship on his way to the world No1 ranking.
The entertaining Ashwin (54) played some expansive shots and brought up his half-century with a swagger by launching Rangana Herath for six over long-off after lunch, but the spinner responded by cleaning him up with the next ball.
Karunartane, after his 307-ball vigil, got a wicked delivery that jumped off his gloves with Ajinkya Rahane running behind the wicketkeeper to take the catch.
Mendis hit a century studded with 16 boundaries to lead the fightback with opener Karunaratne who remained unbeaten at stumps on 92 (12 boundaries). "We really feel good as a team that we're able to win consistently right now, but we realise that it's very important to keep carrying on the same way as well", he added. Karunaratne and former captain Angelo Mathews resisted India for a while during a 69-run stand but Jadeja returned to wreck Sri Lanka after the lunch break. But I was happy with the way we played in the second innings.
Six minutes before tea, Sri Lanka's second innings wound up at 386. "Pujara and Rahane - our two best Test batsmen - Rahul getting runs and Jadeja contributing down the order".
Mendis on the other hand, started a bit shakily, and was lucky to survive when a diving Shikhar Dhawan was unable to hold on to a catch at mid-on off Ravichandran Ashwin's bowling.
Ashwin and Jadeja have enough time and an early wicket in the morning might trigger another Sri Lankan collapse.
Among Indian bowlers, only Ashwin (29) has taken fewer Tests to reach 150 wickets.