India maintained their unbeaten record at the Wanderers today after dismissing South Africa for 177 to pull one back in the three-Test series.
"It could be a massive milestone for us. We already had the belief but now we have the result to back it up. We certainly believe that on any conditions, we have the ability to think about winning Tests," Kohli told reporters.
On a green top wicket, India played only five full-time batsmen and a five-pacer attack as well. Then they opted to bat first after winning the toss and yet managed to etch out a win.
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"It's just that we batted better than them in this game and bowled better. That's why we won."
Kohli and Co received a lot of flak after losing the opening two Tests.
"A lot of people didn't have belief in us but as a team we knew that we were very close in the first two Tests too. We knew that if we played better in pressure-situations than them, then we would win," he said.
Despite the losses, Kohli said his team never lost faith and always backed themselves.
"We don't think like people on the outside. When things don't go well, we as a team don't say 'oh we should have done this' or 'we should have done that'. That's the easiest thing to do. I can say or write anything about anyone," he said.
"But when you're in there, facing their bowling attack on that sort of a wicket, and then when you decide to bat first, you need to be sure. You need to have belief in yourself.
Dean Elgar and Hashim Amla put on 119 runs for the second wicket and South Africa were placed at 124/1 at one stage. The Proteas though collapsed afterwards and succumbed to the pressure of the fourth-innings' chase.
Kohli said: "We got stuck into them in the second innings at Cape Town as well. Then they had a collapse in Centurion in the first innings. So we knew that if we get a couple of wickets the same thing could be repeated.
The India skipper further explained: "I don't think like people on outside (and worry about wickets not falling). It's very important for me to have belief in the team. At all stages I was thinking if we were in this position, and if we lose a wickets, that suddenly makes things difficult for the next batsmen to coming in to bat.
South Africa won the series 2-1 and now the two teams look forward to the six-match ODI series starting in Durban on February 1.
Kohli said: "There is a lot of mutual respect. The rivalry stays on the pitch. We don't see anyone talking ill about the other team. They give credit to us when we do well and we give credit to them when they do well.
"The teams know each other really well. And it is exciting for world cricket and that's why this win was important for us also. Because we are the no.1 side in the world and we played like that today. So given tough competition from the no.2 side in their own conditions, we showed character and am sure the public enjoyed watching this series as well," Kohli signed off.
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