Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
darimi:887Muḥammad b. Yūsuf

[Machine] Sufyan said, "Black and yellow discharge during menstruation is considered menstruation. If a woman sees any blood, black discharge, or yellow discharge after her menstruation days, then she has to perform istihadah." Abdullah was asked if he follows Sufyan's opinion, and he replied, "Yes."  

الدارمي:٨٨٧أَخْبَرَنَا مُحَمَّدُ بْنُ يُوسُفَ قَالَ قَالَ

سُفْيَانُ «الْكُدْرَةُ وَالصُّفْرَةُ فِي أَيَّامِ الْحَيْضِ حَيْضٌ وَكُلُّ شَيْءٍ رَأَتْهُ بَعْدَ أَيَّامِ الْحَيْضِ مِنْ دَمٍ أَوْ كُدْرَةٍ أَوْ صُفْرَةٍ فَهِيَ مُسْتَحَاضَةٌ» سُئِلَ عَبْدُ اللَّهِ تَأْخُذُ بِقَوْلِ سُفْيَانَ؟ قَالَ نَعَمْ