Not graded
Sunan ad-Darimi 2786
أَخْبَرَنَا مُحَمَّدُ بْنُ عُيَيْنَةَ عَنْ عَلِيِّ بْنِ مُسْهِرٍ عَنْ عَاصِمٍ عَنْ الشَّعْبِيِّ قَالَ إِنَّ أَوَّلَ جَدٍّ وَرِثَ فِي الْإِسْلَامِ عُمَرُ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ad-Darimi (No. 2786, 2787).