In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
Yes, ownership of an asset is lost when it is made into a Waqf. As a result, one cannot do what he wants with a Waqf asset. The Waqf asset will be subject to all the stipulations in the Waqf deed at the time of executing the Waqf.
And Allah Alone Knows Best
Mufti Faraz Adam,
I Waqf Shariah Advisor