Nahj al-Balagha Hadith n. 298

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:

مَن بَالَغَ فِي الْخُصوُمَةِ أَثِمَ،

He who goes too far in quarrelling is a sinner,

وَمَنْ قَصَّرَ فِيهَا ظُلِمَ،

but if one falls short in it, one is oppressed

وَلاَ يَسْتَطِيعُ أَنْ يَتَّقِيَ اللهَ مَنْ خَاصَمَ.

and it is difficult for a quarreler to fear Allah.