Sahih Bukhari | Volume 9 | Hadith Number 42

Narrated by 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."