What is the ruling on a wife remaining in her family's home after her husband divorced her by phone while he was absent in another country, and is the divorce considered valid and enforceable? And what is the duration of the 'iddah (waiting period) practiced in Egypt according to the Hanafi school of thought, and is the presence of witnesses required when the husband pronounces the divorce?

1. The divorced woman must observe her iddah (waiting period) in her husband's house where she was divorced.

2. Moving from the husband's house before the completion of the iddah is forbidden, and the one who does so incurs sin. However, this does not affect the validity of the divorce.

3. The iddah varies according to the condition of the divorced woman.

4. Witnessing the divorce is not a condition for its validity, but it is recommended.