Not graded
Sunan ad-Darimi 3126
حَدَّثَنَا عَمْرُو بْنُ عَوْنٍ أَخْبَرَنَا خَالِدٌ عَنْ خَالِدٍ عَنْ أَبِي قِلَابَةَ قَالَ لَا يَجُوزُ لِوَارِثٍ وَصِيَّةٌ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 3126).