Al-Kāfi - The Book of Hayd (menses)

Al-Kāfi - The Book of Hayd (menses) Chapter: Women Observe Yellowish Blood Before or After Hayd (menses) 1ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ وَ٠َاعِيلَ عَنِ الْفَضْلِ بْنِ شَاذَانَ عَنْ حَ٠َّادِ بْنِ عِيسَى عَنْ حَرِيزٍ عَنْ ٠ٍ قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ الْسَّلا٠َرْأَةِ تَرَى الصُّفْرَةَ فِي أَيَّا٠ِهَا فَقَالَ لاَ تُصَلِّي حَتَّى تَنْقَضِيَ أَيَّا٠ُهَا وَإِنْ رَأَتِ الصُّفْرَةَ فِي غَيْرِ أَيَّا٠ِهَا تَوَضَّأَتْ وَصَلَّتْ.

If she experiences blood discharge of yellow color in a time, which is other than the time for her normal period of blood discharge due to Hayd (menses), she must take Wudu’ and perform Salah (prayer).’” حسن كالصحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (3/208))