Shrien Dewani, 34, is standing trial in the Western Cape High Court and is accused of being the mastermind who hired the three men to kill his 28-year-old Swedish-born wife in a staged hijacking.
Defence lawyers also suggested that there were plans to "sexually molest or rape" Anni before she was killed accidentally after her husband, Shrien Dewani, was freed unharmed during the hijacking.
Shrien was in tears as his lawyers cross-examined Qwabe in great detail.
His lawyer Francois van Zyl suggested that the wounds caused by a single shot to Anni's neck were not normally seen in an execution-type killing and that bruises on her leg clearly showed that she had put up a struggle.
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"(The shot) has all the hallmarks of a shot that went off that was not supposed to go off at the time," Van Zyl said, adding that the men knew that that Dewani was rich and that they could benefit if they kept his wife hostage.
Qwabe also testified about a dispute over the amount promised to the killers by Dewani.
He said they were promised 15,000 rand (USD1,300), but had found only 10,000 rand in a pouch in the vehicle, as the agreement had been that the fee agreed would be in the cubbyhole of the vehicle.
Van Zyl said Dewani would testify that his wife had 10,000 rand in her handbag.
Dewani lost a four-year legal battle to avoid being extradited to South Africa, and was sent to South Africa in April to stand trial.