South Africa were dismissed for 121 giving hosts India an overall lead of 213 runs in their first innings of the fourth and final Test match at Feroz Shah Kotla in Delhi. R A Jadeja took five wickets while V T Yadav and R Ashwin picked two wickets each. AB de villiers was the highest scorer for the Proteas with 42 runs. Earlier, India were all out for 334 in their first innings in the post-lunch session. Ajinkya Rahane struck his fifth Test hundred to score 127 off 215 balls whereas Ravichandran Ashwin hit his sixth Test fifty.