عَنِ الْحَسَنِ مُرْسَلًا قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ جَاءَهُ الْمَوْتُ وَهُوَ يَطْلُبُ الْعِلْمَ لِيُحْيِيَ بِهِ الْإِسْلَامَ فَبَيْنَهُ وَبَيْنَ النَّبِيِّينَ دَرَجَةٌ وَاحِدَةٌ فِي الْجَنَّةِ» . رَوَاهُ الدَّارمِيّ

Sufyan said that ‘Umar b. al-Khattab asked Ka‘b who were the lordsof knowledge, and he replied that they are those who act according towhat they know. He then asked what it is that takes knowledge fromthe hearts of the learned and was told that it is covetousness. Darimitransmitted it.