Rabada was charged with a Level 2 breach of the ICC Code of Conduct and was fined 50 per cent of his match fee and handed three demerit points.
But the fiery Rabada's conduct throughout the second Test has earned him a ban for the final two matches.
The visitors also failed to capitalize on a good start by the openers on the first day when they saw off the threat of the new ball in overcast conditions.
Rabada's poor disciplinary record means he will miss the third and fourth Tests unless the Proteas successfully have the charge downgraded. "I was just exhausted of playing". "I won't change the way I express myself but I will get far away from the batter", he said.
The punishment for Rabada, one of the most exciting young bowlers in cricket and recently ranked No. 1 in tests, is the latest in a series of disciplinary problems for him over the last 12 months.
Fined 20 per cent of his match fee and given one demerit point.
"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.
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Australia were 180 for five in their second innings at the close, a slender lead of 41 runs with five wickets remaining.
The four-test series resumes in Cape Town from March 22 and Australia will be glad for the extended break as all-rounder Marsh races to recover from a groin strain.
"I've played a lot more now since 2014 and the more you play, the more people have plans to you to try to keep you quiet and those kind of things", Smith said. In the wake of this, South Africa captain Faf du Plessis has questioned the International Cricket Council's (ICC) demerit system, saying that it does Test cricket no favors.
A magnificent century by AB de Villiers enabled South Africa to take a first innings lead of 139 and Australia lost four wickets before they wiped out the deficit.
Lungi Ngidi had Nathan Lyon caught behind and Keshav Maharaj had Josh Hazlewood caught at deep midwicket to leave Tim Paine unbeaten on 28 as Australia were dismissed for 239, having added only 59 to their overnight total for the loss of their last five wickets.
The 22-year-old removed Mitch Marsh, Cummins and Mitchell Starc on day four, showing why he is one of the best fast bowlers in the world.
Rabada's 6-54 followed his 5-96 in the first innings and it was his fourth 10-wicket haul in tests.