Not graded
Sunan ad-Darimi 901
حَدَّثَنَا خَالِدُ بْنُ مَخْلَدٍ حَدَّثَنَا مَالِكٌ عَنْ ابْنِ شِهَابٍ عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ قَالَ عِدَّةُ الْمُسْتَحَاضَةِ سَنَةٌ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 901).