Deception veiling moral admonition
Nahj al-Balāgha|Volume 1|Book 3|Chapter 282
٢٨٢. وَقَالَ (عليه السلام): بَيْنَكُمْ وَبَيْنَ الْمَوْعِظَةِ حِجَابٌ مِنَ الْغِرَّةِ.
282. Amīr al-mu’minīn, peace be upon him, said: Between you and the preaching there is a curtain of deception.