The prosecution had brought in Birmingham-based escort Leipold Leisser, 43, to give details of his three sexual encounters with Dewani in 2009 and 2010.
But after a few minutes, Judge Jeanette Traverso stopped the testimony by the German-accented witness, also known as 'Gay Master One', when the defence queried the relevance of his statement that Dewani had slept over at his home on the first two occasions.
Leisser told the court, "It was unusual and in fact, he was the first ever client I allowed to stay at my home."
But defence advocate Pieter Botha's concern over the relevance of this was supported by Traverso, who said that it was common cause that Dewani had spent some nights with Leisser and had slept with other men as well.
Prosecutor Adrian Mopp attempted to justify Leisser's evidence in the context of Dewani having confided in Leisser about his engagement to counter a threat of being disowned by his family.
Traverso asked Leisser to step down and adjourned the court after asking both the prosecution and the defence to provide her with written arguments on why Leisser's evidence should or should not be admitted.
34-year-old Dewani is accused of orchestrating the murder of his Indo-Swedish wife Anni while they were on honeymoon in Cape Town in November 2010.
Anni was shot dead when the taxi she and her husband were travelling in was hijacked in the dangerous Cape Town township of Gugulethu.
Dewani, however, insists he is innocent. He fought four-year long lengthy battle to avoid extradition from his native Britain to stand trial, but was eventually brought to Cape Town earlier this year.
He has pleaded not guilty to five counts against him in the trial which started a fortnight ago.
