Is the husband's statement to his ex-wife's father, "I will consider the matter of my wife when I divorce my second wife" — at a time when his ex-wife was still in her waiting period (iddah) without his knowledge — considered a declaration of her reinstatement, and is the woman still under his marital authority, and is she sinful if she did not inform him that she was still in her waiting period? And does she forfeit her dowry and the right to refuse to return and to stipulate conditions, and is it necessary to know the reason for the divorce to issue a ruling?

If a man divorces his wife with a revocable divorce, he has the right to take her back as long as she is within her waiting period (iddah), without a new marriage contract, regardless of whether the wife agrees or not; this is based on the Almighty's saying: {And their husbands have a greater right to take them back in that [period] if they desire reconciliation.} [Quran 2:228]. However, if her waiting period expires without reconciliation, she becomes irrevocably separated from him and is not lawful to him except with a new marriage contract.

The husband's statement: "I will consider my wife's matter" is not an actual revocation, but rather a promise of it.

If the waiting period ends without revocation, the divorced woman has her rights, including the dowry.

The wife is not obligated to inform her husband that she is still within her waiting period. However, if the husband wishes to take her back, it is not lawful for her to conceal the condition of her womb, as the Almighty says: {And it is not lawful for them to conceal what Allah has created in their wombs if they believe in Allah and the Last Day.} [Quran 2:228]. If she exits the waiting period without reconciliation, she has the right to refuse him and to stipulate whatever she wishes.

In case of dispute, recourse should be made to the Sharia court.