De Kock, who was fined 25 per cent of his match fee and given one demerit point for his part, has remained silent on the issue but the South Africa camp has accused Warner of making personal comments about their own players.
Smith scored three centuries during Australia's 2017 tour of India, including a stunning second-innings effort on Pune's raging turner that was rated poor by the match referee.
The early stages of Warner's career were marred by a series of incidents, most notably a bar-room scrap with Joe Root in 2013.
Speaking about the "vile and disgusting" personal sledge about his wife from de Kock, Warner said that he will defend his family but regretted how the entire incident was played out.
The express paceman removed both Marsh brothers in his next over, lifting the Proteas' hopes of a series-levelling victory at tea in Port Elizabeth on Friday (Saturday morning NZ Time).
"CA has reminded the team of the standards of behaviour expected of players representing Australia", he said, pointing to the ICC Code of Conduct and the need to play within the laws and spirit of the game.
Rabada took three of his wickets in an over, and removed Australian batsmen on the last ball before tea and first ball after it, to turn the tide in the home team's favour.
Australia retained the same team that won in Durban while South Africa made one change, bringing in fast bowler Lungi Ngidi for Morne Morkel.
"However, I don't think whatsoever there on the field that I have ever crossed that line".
"He would leave a massive hole‚" Philander said.
Kagiso Rabada's shoulder brush with and send-off of Steven Smith could end up attracting the attention of match officials, already alert to such moments in a series that is - even at just over one-Test old - not short of them. They picked off the runs after that measured start, with Warner accelerating by hitting nine fours.
After Warner's departure South Africa came back with five wickets in the afternoon following a solid opening session for the tourists. However, Aussie captain Steve Smith denied the claim. He had Shaun Marsh lbw for 24 and then Mitchell, who due to illness had Paine bat ahead of him, caught behind for four.