The New Jersey Supreme Court heard arguments Monday on whether renowned litigator David Gross should be disbarred for keeping a $50,000 bonus from a satisfied client, rather than turning it over to his firm.

The Disciplinary Review Board in January said he should be: that his failure to share the bounty with his firm, Budd Larner of Short Hills, N.J., was willful misappropriation, punishable in New Jersey by automatic, permanent disbarment, just like for stealing client funds.