Peace be upon you. May Allah accept your deeds. I would like to ask about the rulings of marriage: 1- Is it permissible for the wife to place her husband's member in her mouth and for the husband to touch his wife's private parts with his mouth? 2- Is it permissible for the husband to look at his wife's private parts for an extended period? (specifically the genitals) 3- Is it permissible for the husband to masturbate with his hand while being aroused by watching his wife?