Muwatta Malik · Hadith 1075

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، عَنْ قَبِيصَةَ بْنِ ذُؤَيْبٍ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، فَرَضَ لِلْجَدِّ الَّذِي يَفْرِضُ النَّاسُ لَهُ الْيَوْمَ ‏.‏

Yahya related to me from Malik from Ibn Shihab from Qabisa ibn Dhu'ayba that Umar ibn al-Khattab gave the grandfather "what people give him today

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).