Not graded
Sunan ad-Darimi 850
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى عَنْ سُفْيَانَ عَنْ ابْنِ جُرَيْجٍ عَنْ عَطَاءٍ قَالَ الْكُدْرَةُ وَالصُّفْرَةُ وَالدَّمُ فِي أَيَّامِ الْحَيْضِ بِمَنْزِلَةِ الْحَيْضِ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 850).