Ibn ‘Abbas reported the Prophet (ﷺ) as saying, “When a man’s slave-woman bears him a child she becomes free at his death.”* Darimi transmitted it. * The text has <i>'au durbur in minhu au ba'dahu’</i> indicating a doubt on the part of a transmitter as to which words were used. Both expressions amount to the same thing so it seems sufficient to give "at his death" in the translation above.

وَعَنِ ابْنِ عَبَّاسٍ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِذَا وَلَدَتْ أَمَةُ الرَّجُلِ مِنْهُ فَهِيَ مُعْتَقَةٌ عَنْ دُبُرٍ مِنْهُ أَوْ بَعْدَهُ» . رَوَاهُ الدَّارِمِيُّ