It was narrated that Al-Mughirah bin Shu'bah said: "A woman struck her co-wife, who was pregnant, with a tent pole and Killed her, The Messenger of Allah ruled that the 'Asahab of the Killer was to pay the Diyah and to give a slave (as Diyah for ) the child in her womb. One of the'Asabah of the killer said: “Am I to pay blood money for one whom neither ate nor drank, or shouted or cried (at the moment of birth)? Such a one should be overlooked. The Messenger of Allah said: “Rhyming verse like the verse of the Bedouin?' and he made them pay the Diyah””"
SahihSahihHasanBook 45 · Hadith 117