Does a man have to inform his 1st wife if he marries a second woman?

Re: Does a man have to inform his 1st wife if he marries a second woman?

If you live in Pakistan, according to the law and what is on the nikkahnama, I believe you do need to have permission of the first wife. Now the maulvi's who devised that nikkahnama...were they on weed when they wrote that clause?