Not graded
Sunan ad-Darimi 2991
حَدَّثَنَا أَبُو نُعَيْمٍ حَدَّثَنَا زَكَرِيَّا عَنْ عَامِرٍ قَالَ سُئِلَ عَامِرٌ عَنْ الْمَمْلُوكِ يُعْتَقُ سَائِبَةً لِمَنْ وَلَاؤُهُ قَالَ لِلَّذِي أَعْتَقَهُ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 2991).