Is the divorce considered revocable or irrevocable if it was agreed upon in absentia with a waiver of the wife's financial rights during the waiting period, and is the return valid if the waiver was made and then the wife was taken back?

The default nature of divorce is that it is revocable, except in cases where it becomes irrevocable (Bain), such as: divorce in exchange for compensation, and a wife's waiver of her rights during the 'iddah (definition) (waiting period) makes it an irrevocable divorce. If the divorce is irrevocable but not the third divorce, the husband may take his wife back with a new contract, a new Mahr (dowry), and her consent. It is recommended to consult scholars or specialized personal status authorities to confirm certain matters.