Explanation:

- Option 1: Ownership of God

- In a waqf, the ownership of the property is considered to be transferred to God.

- The property itself cannot be sold, inherited, or donated as it is dedicated in perpetuity.

- Option 2: Benefit to mankind

- The primary objective of a waqf is to serve the community or specific charitable purposes.

- The benefits are distributed to people according to the terms set by the waqif (founder).

- Option 3: Both (a) and (b)

- Both aspects, the ownership by God and benefits to mankind, are essential components of a waqf.

- Option 4: Neither (a) nor (b)

- This option is incorrect since both ownership transfer and benefiting mankind define a waqf.