Klaasen slammed seven sixes in hitting 69 off 30 balls as South Africa chased down a target of 189 with eight balls to spare
Dhawan made 72 in an Indian total of 203 for five after they were sent in to bat.
India captain Kohli left the field 13 overs into South Africa’s innings after suffering a left leg strain while batting
The series was a personal triumph for Kohli, who hit three centuries and became the first player to score more than 500 runs in a bilateral series
Indian wrist spinners Kuldeep Yadav and Yuzvendra Chahal were effective on a slow pitch, taking four and two wickets respectively.
South Africa's chances of overhauling India's 274 for seven plummeted when they lost their first three wickets inside the first 13 overs.
Zondi said the squad had also been selected with a view to giving exposure to players who might be considered for the next World T20 in 2020.
In a brief statement, Cricket South Africa said it was aware of video footage of Tahir being circulated on social media.
Recap all the action from the rain-curtailed fourth ODI of South Africa-India series 2018
South Africa name depleted squad for Pakistan T20Is owing to IPL constraints
PCB decides to resume PSL 2021 in June
'It was a joint decision' - Silverwood on Archer's omission from ODI side
Bravo century, Pollard blitz lift West Indies to series whitewash over Sri Lanka
One member of Pakistan's touring party tests positive for coronavirus
Sharjeel Khan returns to T20I side, Shahnawaz Dahani handed maiden Test call-up
PSL 2019 - PSL Schedule with all PSL 4 Matches and Schedule for all Franchises
PCB announces major salary hike for domestic cricketers in new pay structure
Play and Win with 1st Cricingif Play League
Pak vs SA Live Streaming and TV Channels Broadcast Information