Narrated Hisham's father:

'Umar asked the people, "Who heard the Prophet giving his verdict regarding abortions?" Al-Mughira said, "I heard him judging that a male or female slave should be given (as a Diya)." 'Umar said, "Present a witness to testify your statement." Muhammad bin Maslama said, "I testify that the Prophet gave such a judgment."

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا هِشَامٌ، عَنْ أَبِيهِ، عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ، عَنْ عُمَرَ ـ رضى الله عنه ـ أَنَّهُ اسْتَشَارَهُمْ فِي إِمْلاَصِ الْمَرْأَةِ فَقَالَ الْمُغِيرَةُ قَضَى النَّبِيُّ ﷺ بِالْغُرَّةِ عَبْدٍ أَوْ أَمَةٍ. فَقَالَ ائْتِ مَنْ يَشْهَدُ مَعَكَ، فَشَهِدَ مُحَمَّدُ بْنُ مَسْلَمَةَ أَنَّهُ شَهِدَ النَّبِيَّ ﷺ قَضَى بِهِ.