Imam al-Shafi'i (may Allah have mercy on him) mentioned two views about them (the children): "One of them is that they have her (their mother's) status: they become free when she becomes free, and remain slaves while she remains a slave."
He (Imam al-Shafi'i, may Allah have mercy on him) said: "And some of the people of knowledge have said this as well."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / Q21583
Abu al-Nadr says that Abd al-Rahman bin Ya'qub was a mawla (freed slave) of al-Huraqah, of the tribe of Juhaynah. He says: My grandmother's master married her to a slave of his, and afterwards made her mudabbar. She had children after her freedom (was so declared). Then her master died, and the dispute was brought to Sayyiduna Uthman (may Allah be pleased with him), and he ruled that the children born before she was made mudabbar are slaves, and the children born after the tadbir are free.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21583
Nafi' narrates from Ibn Umar (may Allah be pleased with them both) that he used to say: The children of a mudabbarah have their mother's status; the children become free through their mother's freedom and remain slaves through her slavery.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21584
Sufyan al-Thawri (may Allah have mercy on him) narrates from Ubaydullah (may Allah have mercy on him) that the children of a mudabbarah have their mother's status, if when she gave birth she was a mudabbarah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21585
Abu al-Zubayr heard Jabir bin Abdullah (may Allah be pleased with them both) say: "I consider the children of a mudabbarah to have the status of their mother."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21586
Dawud bin Abi Hind (may Allah have mercy on him) narrates from al-Sha'bi (may Allah have mercy on him) concerning the mudabbarah and the umm walad (a slave-girl who has borne her master's child): the children of both of them have their status.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21588
Yahya bin Sa'id heard Sa'id bin al-Musayyib (may Allah have mercy on him) say: "When a man makes his slave-girl mudabbarah, he may have intercourse (wati') with her, but he may not sell her or give her as a gift, and her children have her status."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21589
Ibn al-Musayyib and Abu Salamah bin Abd al-Rahman (may Allah have mercy on them both) both say that the children of a mudabbarah have the status of their mother (that is, in the matter of freedom and slavery).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21590
Ata (may Allah have mercy on him) says that Abu al-Sha'tha' (may Allah have mercy on him) used to say regarding the mudabbarah that her children are slaves, like an orchard which you have given in charity (to take effect) after your death: as long as you live, you get its fruit. And Ata (may Allah have mercy on him) says: It is like camels which you give in charity (to take effect) after your death: during your lifetime you get their young and their milk.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21592
Ikrimah bin Khalid (may Allah have mercy on him) says: I was present with Abd al-Malik bin Marwan (may Allah have mercy on him) when a dispute about the children of a mudabbarah was brought to him, and he consulted those around him. One man said: "Her children are to be sold, because a man gives date palms in charity yet eats their fruit." Another contradicted what he said, saying: "The children of a mudabbarah have their mother's status; sometimes a man offers a camel as a sacrifice and it is about to give birth, so he slaughters its young along with it." Ikrimah (may Allah have mercy on him) says: He stood up and gave no ruling.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21593
Sulayman bin Yasar (may Allah have mercy on him) says that a man came to Zayd bin Thabit (may Allah be pleased with him) and said: "My cousin (the daughter of my paternal uncle) declared her slave-girl free upon her own death (i.e., made her mudabbarah), and she has no other property." He said: "Let her take (benefit) from her womb (i.e., her offspring) as long as she is alive."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21594
Abu al-Zubayr heard Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) saying about the children of a mudabbarah that after the master's death they are free. (b) Ata (may Allah have mercy on him) says that the children of a mudabbarah are slaves, unless she was pregnant on the day she was made mudabbarah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المدبر / 21595