Versions of s. 18.4(1), definition “canadian ordinary income”, para (a)

if the taxpayer is not a partnership, included in respect of the payment in computing, in the case of a taxpayer resident in Canada, the income of the taxpayer for the purposes of this Part — or, in the case of a taxpayer that is a non-resident person, the taxable income earned in Canada of the taxpayer — for the year, except to the extent that