Musar for Sanhedrin 45:23
תניא נמי הכי לעולם פוסל והולך עד שיקבל עליו ב"ד שמומחה לרבים דברי ר"מ
of the people in Jerusalemused to act thus: They would not sign a deed without knowing who would signwith them; they would not sit in judgment unless they knew who was to sitwith them; and they would not sit at table without knowing their fellow diners.
Mesilat Yesharim
But the man who was completely purified from this affliction and has been cleansed of all trace of evil which lust leaves behind it, behold his vision will be perfectly clear and his discernment will be pure. He will not be swayed by any desire. He will recognize anything which is a sin. Even for the most minuscule, he will see its evil and will distance from it. On this our Sages referred regarding the men of Sheleimut (Wholeness) who purified their deeds to such a great extent as to leave not even a stirring of evil - "the clean minded men of Jerusalem" (Sanhedrin 23a).
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