(39) بَابُ: {وَأُولاَتُ الأَحْمَالِ أَجَلُهُنَّ أَنْ يَضَعْنَ حَمْلَهُنَّ}
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."
Reference: Sahih al-Bukhari 5319
In-book reference: Book 68, Hadith 68
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 63, Hadith 240