In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
If the two married spouses engage in an intimate relation during iddah (waiting period), the divorce revokes and they are still in marriage.
In his response to your question, Sheikh Ahmad Kutty, a senior lecturer and an Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, states:
If you did consensually engage in sexual intercourse during iddah (waiting period), then the divorce has been revoked and you remain in marriage.
Hence you are not allowed to consider marrying another man.
Almighty Allah knows best.
Editor’s note: This fatwa is from Ask the Scholar’s archive and was originally published at an earlier date.