Not graded
Sunan ad-Darimi 182
حَدَّثَنَا يَحْيَى بْنُ حَمَّادٍ حَدَّثَنَا أَبُو عَوَانَةَ عَنْ مُغِيرَةَ عَنْ الشَّعْبِيِّ قَالَ لَا أَدْرِي نِصْفُ الْعِلْمِ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 182).