Ahmad ibn Ubdun narrated to me from Ali ibn Muhammad ibn al-Zubayr, from Ali ibn al-Hasan ibn Faddal, from Muhammad ibn Abdullah ibn Zurara, from Muhammad ibn Ali al-Halabi, from Abu Abdullah عليه السلام, who said: Imam عليه السلام said: "The ghusl (ritual bath) for janabah and menstruation is the same." He also said: "I asked Abu Abdullah عليه السلام whether a menstruating woman has to perform a ghusl similar to the ghusl for janabah." Imam عليه السلام replied: "Yes."