Q: Can a husband marry twice without the permission of his first wife because he does not have any children from his first wife?
A: The nikaah is valid, but we strongly discourage this on account of the numerous complications that come about due to secret nikaahs. If he needs to make a second nikaah then he should announce it fully.
And Allah Ta’ala (الله تعالى) knows best.
Mufti Ebrahim Salejee (Isipingo Beach)