سَأَلْتُهُ عَنِ الضُّعَفَاءِ فَكَتَبَ إِلَيَّ الضَّعِيفُ مَنْ لَمْ تُرْفَعْ إِلَيْهِ حُجَّةٌ وَ لَمْ يَعْرِفِ الِاخْتِلَافَ فَإِذَا عَرَفَ الِاخْتِلَافَ فَلَيْسَ بِمُسْتَضْعَفٍ.
“Once I asked abu al-Hassan Musa (a.s.) about the feeble-minded people and he wrote to me, ‘A feeble-minded is one to whom evidence and proof is not (or cannot be) presented and he does not know the differences among people. If he knows the differences among people he is not an enfeeble person.’”