In the House of Commons on May 16th, 1996. See this statement in context.
National UnityOral Question Period
Saint-Laurent—Cartierville Québec
Liberal
Stéphane Dion LiberalPresident of the Queen's Privy Council for Canada and Minister of Intergovernmental Affairs
Mr. Speaker, it is the conviction of the government that a unilateral declaration of independence would not be supported by international law and would be against Canadian law.
See context to find out what was said next.