حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ حَدَّثَنَا أَبِي سَمِعْتُ يُونُسَ عَنِ الزُّهْرِيِّ عَنْ حَمْزَةَ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ عَنْ أَبِيهِ قَالَ سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ أُتِيتُ وَأَنَا نَائِمٌ بِقَدَحٍ مِنْ لَبَنٍ فَشَرِبْتُ مِنْهُ حَتَّى جَعَلَ اللَّبَنُ يَخْرُجُ مِنْ أَظْفَارِي ثُمَّ نَاوَلْتُ فَضْلِي عُمَرَ بْنَ الْخَطَّابِ فَقَالَ يَا رَسُولَ اللَّهِ فَمَا أَوَّلْتَهُ قَالَ الْعِلْمُ
مسند امام احمد بن حنبل · Hadith 5554
It was narrated from Hamzah ibn 'Abd-AIlah ibn 'Umar that his father said: I heard the Messenger of Allah (PBUH) say: "Whilst I was sleeping, a vessel of milk was brought to me. I drank from it until the milk started coming out from beneath my nails (i.e., until my thirst was fully quenched), then I gave my leftovers to 'Umar ibn al-Khattaab." He said: O Messenger of Allah, how did you interpret that? He said: "Knowledge."
Sanad
حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ حَدَّثَنَا أَبِي سَمِعْتُ يُونُسَ عَنِ الزُّهْرِيِّ عَنْ حَمْزَةَ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ عَنْ أَبِيهِ