Sahih Muslim | Book 16 | Hadith Number 4174

Narrated by Miswar b. Makhrama
Miswar b. Makhrama reported that 'Umar b. Khattab consulted people about the diyat of abortion of an unborn child. Mughira b. Shu'ba said: I bear witness to the fact that Allah's Messenger (may peace be upon him) gave judgment about it that a good quality of slave or female slave should be given for it. Thereupon 'Umar said: Bring one who may bear witness to you. Then Muhammad b. Maslama bore witness to him.