Chris Bosh helped out with 28 points as the Heat logged their sixth win in eight contests.
Dwyane Wade also played a key role in Miami's victory with 23 points, five rebounds, five assists and three steals.
Toronto, meanwhile, continued struggle with their fourth setback in five outings despite a good game from newly acquired Rudy Gay.
The former Memphis star put in 29 points while DeMar DeRozan went 14-of-14 from the free throw line en route to 27 points in the Raptors' loss.
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