73. Attribution of income and capital gain
(1) Where both an amount of income and a capital gain are derived by reason of or are attributable to a donation, settlement or other disposition, the total amount of that income and gain-
(a) that is deemed in terms of section 7 to be that of a person other than the one to whom it accrues or by whom it is received or for whose benefit it is expended or accumulated; and
(b) that is attributed in terms of this Part to a person other than the one in whom it vests, shall not exceed the amount of the benefit derived from that donation, settlement or other disposition.
(2) For purposes of this paragraph, the benefit derived from a donation, settlement or other disposition means the amount by which the person to whom that donation, settlement or other disposition was made, has benefited from the fact that it was made for no or an inadequate consideration, including consideration in the form of interest.