Virat Kohli turned his attention to securing a whitewash after India consigned South Africa to a record innings-and-137-run defeat on day four of the second Test to win the series.

The struggling tourists were all out for 189 in the final session on Sunday to suffer their heaviest Test loss to India after Kohli enforced the follow-on in Pune.

Umesh Yadav (3-22) and Ravindra Jadeja (3-52) capitalised on the tourists' shortcomings with the bat, while Ravichandran Ashwin took 2-45 after claiming 4-69 in the first innings.

Kohli laid the platform with a Test-best 254 not out and the captain is determined to make it 3-0 in Ranchi with an 11th consecutive home series win in the longest format already in the bag.

Asked about his side's run of series triumphs on home soil, the skipper said: "It's been nice, but looking at the larger picture, the Test Championship, every game has even more value.

"We're not going to take the foot off the gas in the third Test, we're looking for a result again, and hopefully make it 3-0.

"Because these points are important, we understand that, with the Test Championship it's going to be very crucial, at all the stages, when we play away from home as well. And no one's going to relax at any stage, that's a guarantee."

Kohli says he would not have registered an astonishing seven double-centuries without taking an unselfish approach at the crease.

"I think it's getting the responsibility of being captain. If you go out planning a double-hundred, you will not get it. But if you go out planning playing five sessions for your team, invariably you cross that 200 mark as well." said Kohli.

"The mindset has always been to help the team as much as possible, play at the tempo the team requires you to, and in that process, big scores come. The mindset change is the only reason behind the big scores.

"Before that, I used to think from a personal point of view and put pressure on myself. But the moment you start thinking about the team, all the pressure goes away, and all you're thinking is how to contribute to the team's cause."