‘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’.’
مَا رَأَيْتُ ابْنَ الْمُبَارَكِ يُفْصِحُ بِقَوْلِهِ كَذَّابٌ إِلاَّ لِعَبْدِ الْقُدُّوسِ فَإِنِّي سَمِعْتُهُ يَقُولُ لَهُ كَذَّابٌ