Muhammad ibn al-Muthanna al-'Anazi narrated to us, Yahya — meaning Ibn Sa'id — narrated to us, from 'Ubayd Allah, from Nafi', from Safiyyah, from one of the wives of the Prophet, peace and blessings be upon him, from the Prophet, peace and blessings be upon him, who said: "Whoever goes to a soothsayer and asks him about something, his prayer will not be accepted for forty nights."