What is the ruling on a wife remaining in her husband's house after he has pronounced a divorce and six months have passed since the 'iddah (waiting period), and is she considered a stranger to him, and what is the ruling on him taking her back?

A revocable divorcee becomes a stranger to her ex-husband after her 'iddah (waiting period) expires. It is not permissible for them to be in seclusion or live in the same place. If they wish to remarry, there is no objection, but it requires a guardian, a new contract, and a new dowry.