Ghusl for Menstruation and Postpartum
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 21
وَ رُوِيَ: «فِي اَلْمَرْأَةِ تَرَى اَلصُّفْرَةَ أَنَّهُ إِنْ كَانَ ذَلِكَ قَبْلَ اَلْحَيْضِ بِيَوْمَيْنِ فَهُوَ مِنَ اَلْحَيْضِ وَ إِنْ كَانَ بَعْدَ اَلْحَيْضِ بِيَوْمَيْنِ فَلَيْسَ مِنَ اَلْحَيْضِ.
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام narrates that: It is narrated regarding a woman who sees yellowish discharge: 'If this occurs two days before her menstrual period, it is considered part of her menstruation; if it occurs two days after her menstrual period, it is not considered part of her menstruation.'.
- Ṣaḥīḥ al-Faqīh