The mental capacity required to make a valid will.
In Islamic law
Classical fiqh likewise requires soundness of mind for a valid wasiyyah, and treats bequests made in the final illness under separate rules.
In Canadian law
The testator must understand the nature of making a will, the extent of their property, and who might reasonably expect to benefit. Capacity is assessed at the time of signing, and is the most common ground for challenging a will.
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:
- Litigation 2
- Costs rejecting settlement offer dependant claim ontario
- Does probate avoidance avoid estate litigation ontario
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.