Nahj al-Balāgha
Hadith 1842٢٦٥. وَقَالَ (عليه السلام): إِنَّ كَلاَمَ الْحُكَمَاءِ إذَا كَانَ صَوَاباً كَانَ دَوَاءً، وَإِذَا كَانَ خَطَأً كَانَ دَاءً.
265. Amīr al-mu’minīn, peace be upon him, said: When the utterance of the wise is to the point it serves as a cure, but if it is wrong it proves like an illness. [1]