The New Zealand international has been involved in his country's Test squads over the past two years, and since the beginning of 2020, has taken 82 wickets in 28 matches.
After winning the toss and choosing to bat, Bhutan skipper Ngawang Choden struck a pair of early boundaries to propel Bhutan to 20 for no loss at the end of four overs.
Gaur was instrumental in restricting hosts Malaysia to a total of 33-9 before the UAE's batters knocked off the target in four overs to set up a 9-wicket win at the UKM-YSD Cricket Oval.
Banthida Leephatthana's knock of 73* followed by Nanthita Boonsukham's three wickets haul guided Thailand to a massive 130-run win over Bhutan on the second day of ICC Under-19 Women's T20 World Cup Asia Qualifier on Saturday.
United Arab Emirates left-arm seamer Mahika Gaur's maiden five-wicket haul skittled Nepal out for 8 in 8.1 overs before the openers knocked off the target in seven balls to remain unbeaten in the tournament.