The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, narrated to me from Abu al-Qasim Ja'far ibn Muhammad, from his father, from Sa'd ibn Abdullah, from Ahmad ibn al-Hasan ibn Ali ibn Faddal, from Amr ibn Sa'id, from Musaddiq ibn Sadaqah, from Ammar ibn Musa al-Sabati, from Abu Abdullah عليه السلام, who said: I asked Imam عليه السلام about Tayammum (dry ablution) for Wudu', Janabah (major ritual impurity), and menstruation for women - whether it is the same. Imam عليه السلام said: "Yes."