al-Sharif al-Radi (d. 406 AH) · Thaqalayn library edition, reproduced verbatim
٩٨. وَقَالَ (عليه السلام): اعْقِلُوا الْخَبَرَ إِذَا سَمِعْتُمُوهُ عَقْلَ رِعَايَةٍ لَا عَقْلَ رِوَايَةٍ فَإِنَّ رُوَاةَ الْعِلْمِ كَثِيرٌ وَرُعَاتَهُ قَلِيلٌ.
98. Amīr al-mu’minīn, peace be upon him, said: When you hear a tradition test it according to the criterion of intelligence not that of mere hearing, because relaters of knowledge are numerous but those who guard it are few.
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