Beilein made the announcement Monday, a day before the team hosts No. 5 Michigan State.
Harris apologized in a statement released by the school, saying he made a poor decision during Friday's practice. Details of what happened have not been disclosed.
Harris was suspended before his team's 69-59 loss to Purdue on Saturday. At the time, he led the Big Ten with 19.2 points per game and is the Wolverines' No. 2 rebounder. Harris had played in 85 straight games for the Wolverines before the suspension.