231.4. If a taxpayer is entitled to an amount of an advantage in respect of a gift of a property described in section 231.2, the following rules apply:(a) that section applies only to that proportion of the taxpayer’s capital gain in respect of the gift that the eligible amount of the gift is of the taxpayer’s proceeds of disposition in respect of the gift; and
(b) section 231 applies to the extent that the taxpayer’s capital gain in respect of the gift exceeds the amount of the capital gain to which section 231.2 applies.