Mustadrak al-Hakim — Hadith 6953M

Mus'ab bin Abdullah al-Zubayri says that Sayyidah Safiyyah was the daughter of Huyayy bin Akhtab bin Sa'yah bin Tha'labah bin Ubayd bin al-Khazraj bin Abi Habib bin al-Nadir bin al-Nahham bin Yanhum. Her lineage, from the Children of Israel, goes back to the tribe of Musa (peace be upon him). Her mother was Barrah bint Samaw'al, and she died in the time of Sayyiduna Mu'awiyah (may Allah be pleased with him).