It is narrated by him (the previous chain) from Ahmad ibn al-Hasan, from Amr ibn Sa'id, from Musaddiq ibn Sadaqah, from Ammar ibn Musa, from Abu Abdullah عليه السلام, who said: Imam عليه السلام was asked about tayammum (dry ablution) for wudu (ablution), for janabah (major ritual impurity), and for hayd (menstruation) for women – if they are the same? Imam عليه السلام replied: "Yes."