Nahj al-Balagha Hadith n. 411

Selections from The Sayings and Preaching of Amir al-Muminin Ali ibn Abi Talib (Peace Be Upon Him) Including His Replies to Questions and Maxims Expressed for Various Purposes.
Translated by Sayyid Ali Reza

وَقَالَ (عليه ‏السلام):

Amir al-mu'minin, peace be upon him, said:

لاَ تَجْعَلَنَّ ذَرَبَ لِسَانِكَ

Do not try the sharpness of your tongue

عَلَى مَنْ أَنْطَقَكَ،

against Him Who gave you the power to speak,

وَبَلاَغَةَ قَوْلِكَ

nor the eloquence of your speaking

عَلَى مَنْ سَدَّدَكَ.

against Him Who set you on the right path.