At trial, Cullen J. had admitted extrinsic evidence as to whether payments made by the taxpayer under a separation agreement, which would have been deductible in computing his income if they were for maintenance as stated in the agreement, were in fact capital payments. Hugessen J.A. stated (p. 5121):
"We also reject the appellant's attempt to invoke the parol evidence rule to object to evidence of the circumstances leading up to the making of the agreement; the Minister, not being a party to that agreement, is entitled to rely on any available evidence to support his characterization of the payments in a manner different from that employed by the former spouses in the agreement itself."