Nahj al-Balāgha

Hadith 2133
truthfulnessimam-aliahl-al-bayt
١٨٥. وَقَالَ (عليه ‏السلام): مَا كَذَبْتُ وَلَا كُذِّبْتُ، وَلَا ضَلَلْتُ وَلَا ضُلَّ بِي.
185. Amīr al-mu’minīn, peace be upon him, said: I have neither spoken a lie nor have I been told a lie. I have neither deviated nor have I been made to deviate (others).
Source: al-Sharīf al-Raḍī