Ibrahim al-Nakha'i (may Allah have mercy on him) said: "When two waiting periods (iddahs) come together, the completion of one of them will suffice."

Ibrahim Nakha'i (may Allah have mercy on him) said: "If a man becomes absent from his wife and the woman marries (another), then the first husband returns, the woman will observe only one waiting period ('iddah)."

Hazrat Hakam bin Utaybah, may Allah have mercy on him, said: "She will complete two waiting periods (iddahs)."

Ibrahim Nakha'i (may Allah have mercy on him) said: A woman received news of her husband's death, so she married another man. Then she learned that her first husband was alive, and he gave her three divorces. He said: "The woman should separate from the second husband and observe three menstrual cycles, then she may marry whomever she wishes. And if she is pregnant, the delivery of the child is her waiting period, then she should observe two more menstrual cycles."

Hasan al-Basri (may Allah have mercy on him) said: "When the first husband returns, the woman should observe the waiting period (‘iddah) from the second husband, then return to the first husband."

Sayyiduna Umar bin Khattab (may Allah be pleased with him) said: "They should be separated, the woman should complete the remaining waiting period (‘iddah) of her first husband, then observe the waiting period of the second husband."

Ibrahim Nakha'i (may Allah have mercy on him) said: "The woman should be returned to her first husband and the inheritance taken from the second husband should be returned."

It is narrated from Hazrat Waleed bin Abi Hashim, may Allah have mercy on him, that a woman married after her husband passed away and gave birth to a child four months later. The case was brought to Sayyiduna Umar bin Khattab, may Allah be pleased with him. He inquired from the women, and the women informed him that this was possible. Accordingly, he attached the woman to her first husband and attributed the child to him.