In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
Waqf execution requires mental capacity. A person lacking mental capacity cannot give something into Waqf. [Hashiyah ibn Abidin]
And Allah Alone Knows Best
Mufti Faraz Adam,
I Waqf Shariah Advisor