At the time of setting for the Battle of the Camel
Nahj al-Balāgha|Volume 1|Book 1|Chapter 33
أَمَا وَاللهِ إنْ كُنْتُ لَفِي سَاقَتِهَا حَتَّى تَوَلَّتْ بِحَذَافِيرِهَا، مَا عَجَزْتُ،وَلاَ جَبُنْتُ، وَإِنَّ مَسِيرِي هذَا لِمثْلِهَا، فَلاَنْقُبَنَّ الْبَاطِلَ حَتَّى يَخْرُجَ الْحَقُّ مِنْ جَنْبِهِ.
By Allāh, surely I was in their lead till it took shape with its walls. I did not show weakness or cowardice. My existing march is also like that. I shall certainly pierce the wrong till right comes out of its side.