Sunan Abu Dawud #3942 · The Book of Manumission of Slaves

Sunan Abu DawudThe tradition mentioned above has also been narrated by Ibn 'Umar from the Prophet
Sunan Abu Dawud · Book 31 · The Book of Manumission of Slaves
Sunan Abu Dawud · كتاب 31 · كتاب العتق
I do not know whether the following words are part of the tradition of the Prophet (ﷺ) or Nafi' told them himself: "Otherwise he will be emancipated to the extent of the first man's share
حَدَّثَنَا سُلَيْمَانُ بْنُ دَاوُدَ، حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم بِهَذَا الْحَدِيثِ قَالَ أَيُّوبُ فَلاَ أَدْرِي هُوَ فِي الْحَدِيثِ عَنِ النَّبِيِّ صلى الله عليه وسلم أَوْ شَىْءٌ قَالَهُ نَافِعٌ وَإِلاَّ عَتَقَ مِنْهُ مَا عَتَقَ ‏.‏
Reference : Sunan Abu Dawud 3942In-book reference : Book 31, Hadith 17