Madam Speaker, there is a legal rule and a rule of convention called the sub judice rule, which restrains parliamentarians on statements made about ongoing legal proceedings, especially criminal cases before the courts. Members are expected to refrain from discussing matters that are before the courts or tribunals, which are courts of record. The purpose of this sub judice convention is to protect the parties in a case awaiting or undergoing trial and persons who stand to be affected by the outcome of a judicial inquiry. As the Supreme Court of Canada has stated, "It is a wise principle that the courts and Parliament strive to respect each other's role in the conduct of public affairs.”
In the House of Commons on February 5th, 2019. See this statement in context.