Pat Riley was "visibly angry" with both James Johnson and Dion Waiters, sources told Barry Jackson of the Miami Herald.
Waiters and Johnson will not accompany the team for a weekend road trip against the Bucks and Timberwolves.
Waiters complained about playing time following a preseason game against the Rockets. Waiters also skipped a mandatory weigh-in last week.
Johnson failed to meet the team's conditioning standards involving body fat.