The waiting period (iddah)

Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) narrates: I said to the Prophet (peace and blessings be upon him): (Allah Almighty says:) "And for those who are pregnant, their term is until they deliver their burden." (I asked the Prophet (peace and blessings be upon him):) Is this ruling for a woman divorced three times, or for a widow? The Prophet (peace and blessings be upon him) said: "It is for the woman divorced three times and also for the widow."
Abdullah bin Ahmad recorded it. Its chain contains a narrator, al-Muthanna bin al-Sabbah, whom Ibn Ma'in declared thiqah (trustworthy) and the majority declared da'if (weak).

Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) narrates: Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) differed with me about a pregnant widow. I said: "When she gives birth, she may be married." Then my umm walad, Umm al-Tufayl, told me and Sayyiduna Umar (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) had instructed Subay'ah al-Aslamiyyah: when Subay'ah al-Aslamiyyah had given birth, the Prophet (peace and blessings be upon him) instructed her to marry.
Ahmad recorded it. Its chain is hasan (good), except that Busr bin Sa'id did not live in the time of Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him).

Sayyidah Umm al-Tufayl (may Allah be pleased with her), who was the wife (or umm walad) of Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him), narrates that she heard Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) and Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) debating, and Sayyidah Umm al-Tufayl (may Allah be pleased with her) said: "Why does Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) not ask Subay'ah al-Aslamiyyah, whose husband died while she was pregnant, and a few days after that she gave birth, and the Prophet (peace and blessings be upon him) had her married?"
Ahmad recorded it. Al-Tabarani recorded it as a more complete narration. Its chain contains a narrator, Ibn Lahi'ah, whose hadith is hasan (good), and there is weakness in him. The remaining narrators of this narration are thiqat (trustworthy).

Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrates: Subay'ah al-Aslamiyyah bint al-Harith gave birth fifteen days after the death of her husband. A man called Abu al-Sanabil came to this woman and said: "Perhaps you are preparing to marry again. You have no right to that until the term that ends later is completed." The woman came to the Prophet (peace and blessings be upon him) and told the Prophet (peace and blessings be upon him) what Abu al-Sanabil had said. The Prophet (peace and blessings be upon him) said: "Abu al-Sanabil has spoken wrongly. When someone comes to you whose proposal you are pleased with, then come to me, or bring me word of him." (Here the narrator is unsure about one word.) The Prophet (peace and blessings be upon him) told the woman that her waiting period had ended.
Ahmad recorded it. Its narrators are the narrators of the Sahih.

Sayyiduna Abdullah bin Utbah (may Allah be pleased with him) narrates: Sayyidah Subay'ah al-Aslamiyyah bint al-Harith (may Allah be pleased with her) — after this the narrator mentioned the hadith as before, in which these words occur: "When a suitable match comes for you, come to me (the narrator is unsure, perhaps the words are:) tell me about him." In this the narrator did not mention Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him).
Ahmad recorded it. Its narrators are the narrators of the Sahih.

Sayyidah Aishah Siddiqah (may Allah be pleased with her) narrates: In the blessed time of the Prophet (peace and blessings be upon him), a woman was divorced. After twenty days had passed, she gave birth. She came to the Prophet (peace and blessings be upon him) and told him about it, and the Prophet (peace and blessings be upon him) said: "Seek what is best in your matter!" That is, get married.
Al-Tabarani recorded it in al-Mu'jam al-Awsat with two chains, the narrators of one of which are thiqat (trustworthy).

Sayyiduna Anas (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "It is not lawful for any woman who believes in Allah Almighty and the Last Day to mourn for anyone's death for more than three days, except in the case of a husband."
Al-Bazzar recorded it. Its chain contains a narrator, Zam'ah bin Salih, who is da'if (weak), although he has been declared trustworthy.

Sayyidah Aishah Siddiqah (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) made the waiting period of Barirah the waiting period of a free woman.
Al-Bazzar recorded it. Its chain contains a narrator, Humayd bin al-Rabi', whom Ahmad and others declared thiqah (trustworthy), and a group declared da'if (weak). The hadith reported via Abu Bakr (a narrator) from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) has already passed, concerning giving a slave woman the choice.

Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) said: "A widow has been forbidden from wearing perfume and adornment."
Al-Tabarani recorded it. Its narrators are the narrators of the Sahih.

Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: "When a woman is divorced and it is thought that her menstruation has now stopped, but this is not clear from her, she will wait for one year. If she does not menstruate during that time, then after the year has passed she will observe a waiting period of a further three months. If she menstruates during those three months, then she will observe the waiting period by menstrual cycles. But if she menstruated and that menstruation was not completed, and this happened after the three months following the year had passed, then that woman will not hasten in her own matter until she knows whether her menstruation has been completed or not."
Al-Tabarani recorded it. Its narrators are the narrators of the Sahih, except for Abd al-Karim al-Jazari, whose case is different: he says, "The students of Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) narrated this," and he did not name any of those students.