Not graded
Sunan ad-Darimi 3031
حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ حَدَّثَنَا هَمَّامٌ حَدَّثَنَا قَتَادَةُ عَنْ الْحَسَنِ وَسَعِيدِ بْنِ الْمُسَيَّبِ أَنَّهُمَا كَرِهَا بَيْعَ الْوَلَاءِ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 3031).