Sunan Ibn Majah, Volume 3, Book 21, Hadith 2640 (DarusSalam) ⓘ

It was narrated that Miswar bin Makhramah said: “Umar bin Khattab consulted the people concerning a woman who had been caused to miscarry. Al-Mughirah bin Shu'bah said: 'I saw the messenger of Allah rule that a slave, male or female, be given as blood money (for a fetus).' 'Umar said: 'Bring me someone who will testify alongside you. So he brought Muhammad bin Maslamah to testify along with him.'”

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَعَلِيُّ بْنُ مُحَمَّدٍ، قَالاَ حَدَّثَنَا وَكِيعٌ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنِ الْمِسْوَرِ بْنِ مَخْرَمَةَ، قَالَ اسْتَشَارَ عُمَرُ بْنُ الْخَطَّابِ النَّاسَ فِي إِمْلاَصِ الْمَرْأَةِ يَعْنِي سِقْطَهَا فَقَالَ الْمُغِيرَةُ بْنُ شُعْبَةَ شَهِدْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم قَضَى فِيهِ بِغُرَّةٍ عَبْدٍ أَوْ أَمَةٍ ‏.‏ فَقَالَ عُمَرُ ائْتِنِي بِمَنْ يَشْهَدُ مَعَكَ ‏.‏ فَشَهِدَ مَعَهُ مُحَمَّدُ بْنُ مَسْلَمَةَ ‏.‏