Musnad Ahmad 1278:0

Narrated by Durrah bint Abi Lahab: I said, "O Messenger of Allah, the people say that I am the daughter of the enemy of Allah." The Messenger of Allah (peace and blessings of Allah be upon him) became angry, such anger as I had never seen him show before, and he said, "What is the matter with people who hurt me regarding my lineage and my relatives? Whoever hurts my relatives has hurt me, and whoever hurts me has hurt Allah."