Virat Kohli warned South Africa regarding the team's determination to complete a whitewash after romping to a record series-clinching win in the second Test by an innings and 137 runs.
India broke Australia's record of 10 straight home series wins as they dismissed South Africa for a paltry total of 189 in their second innings in Pune.
Kohli, who was declared man of the match for his career-best score of 254, praised India's merciless approach and believed his players were eager to prolong their unbeaten streak at home.
"We are lucky to have the group of players we have in the last three-four years. It's amazing to see that hunger and passion for all the guys to keep improving," he said in the aftermath of the win.
India have consolidated their top position in the World Test Championship points table with four successive victories.
Kohli said the inaugural championship's context meant there was no time to "take the foot off the gas".
"Looking at the larger picture of the Test championship, every game has value so we're not going to take our foot off the gas in the third Test. No one's going to relax at any stage, that's a guarantee."
Kohli's counterpart Faf du Plessis conceded India deserved to win the series owing to their batsmen's application at the crease.
The Proteas skipper singled out Kohli for his marathon innings which allowed India to post an imposing total of 601-5 declared in the first innings.
"The way India batted, especially Virat with 250, it takes a lot of mental toughness. Two days in the field can wear you down," du Plessis told reporters.
"Especially that second evening, the batsmen were a bit weak in the mindset. From then it's playing catch-up. We were found wanting in this Test match."
"He was too good. The hunger stood out, it was great value for us as batters," he added.
The tourists failed to bat for longer periods of time in the match except for a stubborn stand between Keshav Maharaj and Vernon Philander during the first innings that lasted 40.3 overs.