The Proteas paceman was in sensational form with the ball as his match figures of 11-150 helped South Africa level their four-match series against Australia.
He received an additional demerit point for giving David Warner an aggressive send-off after dismissing him in the second innings. However, with five charges to his name in the past 13 months - he has already served a one-Test ban in England after swearing at Ben Stokes - he admits he must be careful to ensure disciplinary issues don't continue to plague his career.
Before the verdict was announced, a remorseful Rabada said: "It's going to have to stop".
Rabada noted earlier this week he was "letting the team down" with his behaviour, but also made it clear he was unhappy to be sanctioned for brushing shoulders with Smith.
"The conversation we had with the match referee after the Durban Test - he was telling us that it's important for the rest of the series that we don't just get players out of matches", Faf du Plessis said at the post-match press conference.
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Rabada hit the 151kmh mark, produced unplayable reverse-swing, claimed key scalps at clutch moments, and consistently challenged the batsmen to achieve the fourth 10-wicket haul of his 28-test career.
The 22-year-old was found guilty of inappropriate and deliberate physical contact with Australia captain Steve Smith, having brushed against the batsman after he was dismissed, and was given three demerit points.
"He had the opportunity to avoid the contact‚ and I could not see any evidence to support the argument that the contact was accidental", Crowe said.
Under the new code, umpires have the power to send unruly players from the field, either temporarily or for the match, as well as award penalty runs to the opposition. "I don't think there is a big turnover when it comes to (challenging) these things". I'm not happy about it. I'm really excited to see what's going to happen in his future. Otherwise you could just put a bowling machine and a robot to bat. "For me it's just about looking at the context of the series, and it's crucial that you have the best players playing".
Rabada insisted he needed to make changes to how he celebrated wickets or he would only hurt his nation.
Mumbai:A contrite Kagiso Rabada admits he has let his team down after his two-Test suspension significantly weakened South Africa's chances of winning their home Test series against Australia. So that was my question that why both these incidents were labelled as exactly the same.
Tim Paine plays a pull shot as Australia were rolled for 239 in their second innings, setting up the Proteas for a six-wicket win.