al-Sharif al-Radi (d. 406 AH) · Thaqalayn library edition, reproduced verbatim
٤٢١. وَقَالَ (عليه السلام): كَفَاكَ مِنْ عَقْلِكَ مَا أَوْضَحَ لَكَ سَبِيلَ غَيِّكَ مِنْ رُشْدِكَ.
421. Amīr al-mu’minīn, peace be upon him, said: It is enough if your wisdom distinguishes for you the ways of going astray from those of guidance.
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