Is it permissible to perform a vasectomy due to the existence of birth control methods that are not suitable for the wife, with the possibility of restoring the ability to conceive later?

It is permissible to postpone procreation for a short period, such as for a woman to regain her health or to breastfeed her child. However, it is not permissible to stop it permanently. It is stipulated that this should not involve uncovering the 'awrah (private parts) except out of necessity or severe need.