Death-illness — the final illness during which gifts are treated as bequests.
In Islamic law
Transfers made during the illness from which a person dies are treated as wasiyyah, so the one-third cap and the bar on gifting to heirs apply. The rule prevents a person from redistributing the estate on their deathbed to defeat the fixed shares.
In Canadian law
Canadian equivalents are the doctrines of donatio mortis causa, suspicious circumstances, and testamentary capacity, plus undue influence. The reasoning is similar even though the mechanics differ.
No significant difference between the four Sunni schools is recorded on this point in the sources reviewed. Where a specific case turns on it, ask a qualified scholar rather than relying on a general summary.
Canadian legal detail
Treadstone Law, an Ontario firm with a wills and estates practice, covers the Canadian side of this in more depth:
This entry is general information, not legal or religious advice. Inheritance turns on the exact family circumstances. Confirm Canadian law with a lawyer in your province, and any religious ruling with a qualified scholar.