وحَدَّثَنِي أَحْمَدُ بْنُ يُوسُفَ الأَزْدِيُّ ، قَالَ : سَمِعْتُ عَبْدَ الرَّزَّاقِ ، يَقُولُ : مَا رَأَيْتُ ابْنَ الْمُبَارَكِ يُفْصِحُ بِقَوْلِهِ كَذَّابٌ ، إِلَّا لِعَبْدِ الْقُدُّوسِ ، فَإِنِّي سَمِعْتُهُ يَقُولُ لَهُ : كَذَّابٌ ،
Ahmad bin Yūsuf al-Azdī narrated to me, he said, I heard Abd ar-Razzāq saying: ‘I did not see Ibn al-Mubārak express so plainly the charge of ‘lying’ except towards Abd ul-Quddūs; for indeed I heard him saying to him ‘[You are] a liar’.’