Chapter on Menstruation, Istihada (abnormal bleeding), and Nifas (postpartum bleeding)

Sahl ibn Ziyad reported from Ahmad ibn Muhammad, from Ibn Abi Nasr, from one of our companions, who said: Abu Abdillah عليه السلام said: "The age at which a woman is considered to have reached menopause (ya's min al-maheed) is fifty years."