Ghusl for Menstruation and Postpartum
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 21
وَقَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: «اَلْمَرْأَةُ إِذَا بَلَغَتْ خَمْسِينَ سَنَةً لَمْ تَرَ حُمْرَةً إِلاَّ أَنْ تَكُونَ اِمْرَأَةً مِنْ قُرَيْشٍ.
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: 'When a woman reaches the age of fifty, She does not see menstruation except if She is a woman from Quraysh.'
- Ṣaḥīḥ al-Faqīh