Al-Hasan reported that Umar asked:

Which of your knows what share the Messenger of Allah ﷺ had given to the grandfather from the estate? Ma'qil ibn Yasar said: The Messenger of Allah ﷺ gave him a sixth. He asked: Along with whom? He replied: I do not know. He said: You do not know; what is the use then?

حَدَّثَنَا وَهْبُ بْنُ بَقِيَّةَ، عَنْ خَالِدٍ، عَنْ يُونُسَ، عَنِ الْحَسَنِ، أَنَّ عُمَرَ، قَالَ أَيُّكُمْ يَعْلَمُ مَا وَرَّثَ رَسُولُ اللَّهِ ﷺ الْجَدَّ فَقَالَ مَعْقِلُ بْنُ يَسَارٍ أَنَا وَرَّثَهُ رَسُولُ اللَّهِ ﷺ السُّدُسَ . قَالَ مَعَ مَنْ قَالَ لاَ أَدْرِي . قَالَ لاَ دَرَيْتَ فَمَا تُغْنِي إِذًا .