Intimacy During Iddah (After Proclamation Of Divorce)
I think that such an intimate act, for all practical purposes, would be considered Ruju from Husband. Therefore, in order to give divorce again, a husband has to follow the procedure from the beginning. And if husband had no intention of Ruju to begin with and still committed this act, then this is a grave sin and he will be held accountable for it. Dr. Irfan Shahzad Sahab ( @Irfan76 ) can add his scholarly insight into this matter.