Ikrimah, may Allah have mercy on him, was asked about «امہات الأولاد», so he replied: They are free. He was asked: On what basis do you say this? He replied: On the basis of the Qur'an. It was said: Where in the Qur'an? He replied: The statement of Allah, the Mighty and Majestic: ﴿Obey Allah and obey the Messenger and those in authority among you﴾, and our master Umar, may Allah be pleased with him, was among those in authority, and he commanded that they are free, even if the child born is stillborn.
Hadith Referenceسنن سعید بن منصور / كتاب التفسير / 657
Hadith Gradingمحدثین:سنده صحيح إلى عكرمة
Hadith Takhrij«أخرجه سعيد بن منصور فى (سننه) برقم: 657، 2050، 2051، 2052، والبيهقي فى(سننه الكبير) برقم: 21824، 21825، 21826، 21837، وعبد الرزاق فى (مصنفه) برقم: 13243، 13244، وابن أبى شيبة فى (مصنفه) برقم: 21894»