A Sydney man who killed his wife of 28 years when she told him she wanted a divorce has been found guilty of murder, with a jury rejecting the claim that he acted under provocation.

Dragi Maglovski, 60, bashed Rosa Maglovski, 48, in their Hurstville home before fetching a knife from the kitchen and stabbing her multiple times on October 8 last year.

In the NSW Supreme Court on Monday, a jury found Maglovski guilty of murder after deliberating for about two hours.

Maglovski had earlier pleaded not guilty to murder but guilty to manslaughter. The plea was rejected by the Crown Prosecutor, Paul Leask.

Provocation is a partial defence that reduces the offence of murder to manslaughter. The law is the subject of an inquiry by the NSW Parliament, which is expected to deliver its findings early next year.