Mufti Sahib, I had an important question that, if the wife likes to reach the climax by kissing her private part, then should the husband do it?
Let it be clear that the Shari’a has defined manners of sexual intercourse for husband and wife. They should not have sexual intercourse with no clothes at all with complete nakedness like animals. It is not possible to observe these etiquettes while kissing each other's private parts during sexual intercourse. And sometimes, despite the body part being impure, the tongue is also touched along with kissing. As if it is to lick the dirt, it is impermissible and forbidden. Therefore, one should try to avoid it as much as possible.