Is it permissible for a husband to insert his finger into his wife's anus and move it as an act of intercourse?

A man is permitted to enjoy his wife in any manner, except for anal intercourse and intercourse during menstruation. Inserting a finger into the anus is disliked (makruh), due to the direct contact with impurity and what it may lead to, such as falling into forbidden anal intercourse. Scholars have explained the prohibition of anal intercourse by the presence of harm, and this applies to inserting a finger as well.