India had to work hard for victory after the world number one side resorted to hours of stubborn defensive batting, scoring at barely a run an over, in the hope of salvaging a draw.

But their plans were dashed by the equally determined Indian bowlers led by off-spinner Ravichandran Ashwin, whose 5-61 in the second innings saw him finish the series with a total of 31 wickets.

Paceman Umesh Yadav chipped in with three wickets as South Africa were bowled out for 143 soon after tea, after being set a massive target of 481.

“All wins are special but this one more so because we had to work harder for it,” said Indian captain Virat Kohli.

“The South African batsmen put their heads down and were playing for a draw.

“We were surprised with how they were defending (but) our bowlers did not lose patience. They can be really proud of their effort today.”

India went into the final Test with a 2-0 lead, having already won the the first and third matches. The rain-hit second game ended in a draw.

India declared on 267-5 after making 334 in their first outing, thanks to man of the match Ajinkya Rahane who hit centuries in each innings.

South Africa had folded for 121 in their first knock.

The Proteas fought bravely in the first two sessions Monday but their innings unravelled soon after tea, as they lost their last five wickets inside 5.1 overs. – AFP