Chapter. “For those who are pregnant (whether they are divorced or their husbands are dead) their Idda (period) is until they laydown their burdens.” (V.65:4)
That is, “And those of your women who have despaired of menstruation, if you doubt...” In the explanation, Mujahid said: That is, those women whose condition you do not know, whether they menstruate or not. Likewise, those women who have despaired of menstruation due to old age. Likewise, those women who have not yet begun menstruating due to being underage. The waiting period (‘iddah) for all such types of women is three months.
Narrated Um Salama: (the wife of the Prophet) A lady from Bani Aslam, called Subai'a, become a widow while she was pregnant. Abu As-Sanabil bin Ba'kak demanded her hand in marriage, but she refused to marry him and said, "By Allah, I cannot marry him unless I have completed one of the two prescribed periods." About ten days later (after having delivered her child), she went to the Prophet and he said (to her), "You can marry now."
Hadith Referenceصحيح البخاري / كتاب الطلاق / 5318
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة
Narrated `Abdullah bin `Abdullah: that his father had written to Ibn Al-Arqam a letter asking him to ask Subai'a Al-Aslamiya how the Prophet had given her the verdict. She said, "The Prophet, gave me his verdict that after I gave birth, I could marry."
Hadith Referenceصحيح البخاري / كتاب الطلاق / 5319
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة
Narrated Al-Miswer bin Makhrama: Subai'a Al-Aslamiya gave birth to a child a few days after the death of her husband. She came to the Prophet and asked permission to remarry, and the Prophet gave her permission, and she got married.
Hadith Referenceصحيح البخاري / كتاب الطلاق / 5320
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة