Warning against challenging divine authority with speech
Nahj al-Balāgha|Volume 1|Book 3|Chapter 411
٤١١. وَقَالَ (عليه السلام): لَا تَجْعَلَنَّ ذَرَبَ لِسَانِكَ عَلَى مَنْ أَنْطَقَكَ، وَبَلاَغَةَ قَوْلِكَ عَلَى مَنْ سَدَّدَكَ.
411. Amīr al-mu’minīn, peace be upon him, said: Do not try the sharpness of your tongue against Him Who gave you the power to speak, nor the eloquence of your speaking against Him Who set you on the right path.