What is the ruling of Islamic law regarding dealing with a female tenant who commits adultery in the rented house and refused to leave after being confronted about the matter, while also asking for more time to search for alternative accommodation?

Accusing a woman of adultery is a serious matter and is not permissible except with clear evidence. Allowing foreign men into the house in the husband’s absence is a grave abomination and a dereliction of the husband’s rights, but it is not proof of adultery. She should be advised gently and kindly, and prayers should be made for her repentance. If she does not respond, she should be threatened with informing her husband. If she persists, the husband should be alerted, either by hint or explicitly. The presence of sin in the dwelling does not annul the rental contract, but you have the right to prevent them from committing evil. If the contract period ends, do not renew it for them if the situation remains unchanged.