Jadeja claimed the wicket of Dimuth Karunaratne for 141 to end Sri Lanka's resistance as they followed on and were dismissed for 386. "That's where we think they're very precious, specially in the longer format because they provide you with great balance", Kohli said referring to Jadeja. "Very happy that we went through the hard phases as well and you never get complacent as a side then".
Kohli will fancy equalling Australia's modern era record of nine consecutive Test series wins when the Indians host Sri Lanka for three matches later this year. Though Tharanga was out cheaply for 2 runs, the third wicket partnership between Karunaratne nd Mendis could not be separated until the score reached 198.
It was the manner in which he used his variations that impressed, with the Australia batsmen unable to pick the left-arm wrist spinner.
Nightwatchman Malinda Pushpakumara threw away his wicket, attempting a freakish reverse slog against Jadeja who dismissed Sri Lanka skipper Dinesh Chandimal for two in his next over.
Karunaratne kept up the fight during his 69-run fifth-wicket stand with former captain Angelo Mathews, who made a gritty 36 from 66 balls before being caught behind off Jadeja.
The Indian batsmen had set up the victory with Cheteshwar Pujara and Ajinkya Rahane hitting fine centuries.
The lower-middle order could not capitalize on the momentum as Sri Lanka lost its last five wickets for 76 runs. "Credit goes to them, they batted brilliantly in the first innings and put us under huge pressure", said Chandimal. However the host nation had a better start in the second innings after they were forced to play the follow-on.
The players who got this record were Jadeja and Ashwin, Interestingly Jadeja has won the Man of the Match Award but was given a test match suspension for throwing the ball angrily over a Srilankan player.
Sri Lanka resumed day four on 209 for two and looked determined to make India bat again.
Wicket-keeper Wriddhiman Saha also shone behind the stumps, taking a couple of spectacular catches, effecting a stumping and conceding only four byes on a pitch where the ball frequently misbehaved.
The third and final Test will begin in Pallekele on Saturday.
The source said that itinerary for the series with Sri Lanka would be announced this week.
Jadeja finished with 5-152 and collected seven wickets in the match.
This is for the second time in a row that India have accomplished a Test series win in Sri Lanka - a tricky as well as challenging Test venue for many great sides.
TV UMPIRE: R.K. Illingworth (England).