Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: Sayyiduna Umar (may Allah be pleased with him) stood on the pulpit and said: "I ask, for Allah’s sake, anyone who has heard the decision of the Prophet (peace and blessings be upon him) regarding the child in the womb (being killed), to inform me." So Sayyiduna Haml bin Malik bin Nabigha al-Hudhali stood up and said: "O Commander of the Believers! I was between two women (i.e., two wives), one of whom struck the other with a piece of wood, killing both the woman and the child in her womb. The Prophet (peace and blessings be upon him) ruled that the compensation (diyah) for the child in the womb is the payment of a male or female slave." So Sayyiduna Umar (may Allah be pleased with him) said: "Allahu Akbar! Had we not heard this hadith, we would have given a different ruling."