[Machine] "That the knowledge of Umar was placed in one scale of the balance, and the knowledge of the people of the earth was placed in the other scale, his knowledge outweighed theirs." Waki' said: "I denied that, so I went to Ibrahim and mentioned it to him. He said: 'And what you denied of that, by Allah, Abdullah said something better than that.' He said: 'Indeed, I believe that nine-tenths of the knowledge vanished on the day Umar passed away.'"  

أَنَّ عِلْمَ عُمَرَ وُضِعَ فِي كِفَّةِ مِيزَانٍ وَوُضِعَ عَلْمُ أَهْلِ الْأَرْضِ فِي كِفَّةٍ لَرَجَحَ عِلْمُهُ بِعِلْمِهِمْ» قَالَ وَكِيعُ قَالَ الْأَعْمَشُ فَأَنْكَرْتُ ذَلِكَ فَأَتَيْتُ إِبْرَاهِيمَ فَذَكَرْتُهُ لَهُ فَقَالَ وَمَا أَنْكَرْتَ مِنْ ذَلِكَ فَوَاللهِ لَقَدْ قَالَ عَبْدُ اللهِ أَفْضَلَ مِنْ ذَلِكَ قَالَ «إِنِّي لَأَحْسِبُ تِسْعَةَ أَعْشَارِ الْعِلْمِ ذَهَبَ يَوْمَ ذَهَبَ عُمَرُ ؓ »