Not graded
Sunan ad-Darimi 933
أَخْبَرَنَا مُحَمَّدُ بْنُ عِيسَى حَدَّثَنَا أَبُو سُفْيَانَ عَنْ مَعْمَرٍ عَنْ قَتَادَةَ فِي النُّفَسَاءِ كَطُهْرِ امْرَأَةٍ مِنْ نِسَائِهَا
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 933).