It is reported on the authority of Al-Walīd b. Mazyad that he said: I heard Al-Awzāʿī say, when I asked him, “Who is a fool?” He replied, “One who is blind to what is wrong (evil), [though] he has insight into what is good.” Al-Dhahabī, Siyar A’lām Al-Nubalā` 7:116.
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Related sayings.
It is reported that Imām Al-Awzā’ī – Allāh have mercy on him – said: At the time of Fajr, or a while before it, the Salaf would be as if birds were sitting on their heads: (still ) concentrating on themselves [and their worship], so much so that even if one of their closest friends […]
It is reported that Imām Al-Awzāʿī (d157H) wrote: O Muslims, fear Allāh and obey Him, and accept the advice of the sincere advisers and the exhortation of the exhorters, and know that this knowledge is religion, so be careful about what you do [in it] and from whom you take [it] and who you follow […]