Musannaf Ibn Abi Shayba 28:863

Abu Khalid al-Ahmar narrated to us, from Abu Ishaq, from Sa'id ibn Abi Hind, from Abu Murrah, from Umm Hani, who said: "Two men from my in-laws fled to me on the day of the Conquest, so I granted them protection. Then my brother entered upon me and said, 'I will surely kill them.' So I locked them inside, then I went to the Prophet, peace and blessings of Allah be upon him. He said, 'Welcome and greetings to Umm Hani, what has brought you?' So I informed him, and he said, 'We have granted protection to whom you have granted protection, and we have granted security to whom you have granted security.' She said: So I came and prevented him [my brother] from them."