Is it permissible for a husband to have intercourse with his wife anally, and what is the solution for an Istikhara that yields no clear sign?

It is permissible for a man to approach his wife from behind in her front part, but it is forbidden for him to engage in intercourse with her in her anus. Istikhara does not require a dream; rather, it is for discerning whether there will be success or not, and it is only for permissible matters, not for obligatory or recommended acts, nor for forbidden or disliked acts. It is advisable to be rational when facing problems and to avoid divorce, especially when children are involved, due to its harms, which have led some scholars to consider it fundamentally forbidden.