Al-Kāfi

Hadith 423
menstruation
4ـ مُحَمَّدُ بْنُ إِسْمَاعِيلَ عَنِ الْفَضْلِ بْنِ شَاذَانَ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْحَجَّاجِ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) قَالَ حَدُّ الَّتِي قَدْ يَئِسَتْ مِنَ الْمَحِيضِ خَمْسُونَ سَنَةً.
4. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan from Safwan ibn Yahya from ‘Abd al-Rahman ibn al-Hajjaj who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘Menopause happens at the age of fifty years.”’
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī