One of my friends wife has diabetes and they have 3 children. His wife can not take any more children because of her illness. His wife is taking pills to prevent getting pregnant but because of the diabetes and the medicine that she is taking for this illness in combination with the pills to prevent pregnancies she is getting more ill. She is scared to perform a hysterectomy because of her illness. Now my friend is thinking of performing a hysterectomy because of her so she would not be worried all the time. He has no illness but wants to do this to prevent for his wife worse. The question now is if it is Halaal for him to do so or not?
All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.
It is not permissible for the husband to carry out a vasectomy as this is contrary to the religious objectives (in marriage); in this regard please refer to Fatwa 86967.
If there is a necessity in the case you inquired about, it is related to the woman and not the man. So, the wife may consult specialist doctors so that they may guide her to the suitable means of preventing pregnancy according to her condition.
Allaah Knows best.