Musannaf Ibn Abi Shaybah 801 — A woman performing ghusl: does she undo

A woman asked Sayyidah Umm Salamah (may Allah be pleased with her) about the ritual bath (ghusl) for major ritual impurity (janabah), and she said: "Pour water three times." The woman said: "My hair is abundant." She said: "Gather the hair one part over another."