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

Muhammad ibn Ya'qub reported from Muhammad ibn Isma'il, from Al-Fadl ibn Shadhan, from Safwan, from Abd al-Rahman ibn al-Hajjaj, 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."