Muhammad bin Ishaq (may Allah have mercy on him) narrates from Sa'id bin Abi Hind, from Abu Murrah, the freed slave of Aqil, from Sayyidah Umm Hani (may Allah be pleased with her) that she said: When the Prophet (peace and blessings be upon him) conquered Makkah, two of my in-laws from Banu Makhzum fled to me, and I hid them in my house. Then my brother came to me and said: "I will certainly kill them." So I locked the door on them. Then I came to the Prophet (peace and blessings be upon him) and informed him, and he (peace and blessings be upon him) said: "We too have granted protection to whomever you granted protection, and given security to whomever you gave security."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21388