B-1, r. 3.1 - Code of Professional Conduct of Lawyers

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105. A lawyer cannot receive from a client, as payment for the lawyer’s professional services, a participation or other interest in property or in an enterprise, other than a non-material interest in an enterprise listed on a recognized stock exchange, except where the lawyer recommends that the client first obtain legal or accounting advice regarding the matter.
O.C. 129-2015, s. 105.