अथ ह चक्षुरूचुस्त्वं न उद्गायेति ।तथेति तेभ्यश्चक्षुरुदगायत् ।यश्चक्षुषि भोगस्तं देवेभ्य आगायत् ।यत्कल्याणं पश्यति तदात्मने ।तेऽविदुरनेन वै न उद्गात्रात्येष्यन्तीति ।तमभिद्रुत्य पाप्मनाविध्यन् ।स यः स पाप्मा यदेवेदमप्रतिरूपं पश्यति ।स एव स पाप्मा ॥बृह. १,३.४ ॥
In plain words
Then they said to the eye, "Sing the Udgītha for us." "So be it," said the eye, and sang the Udgītha for them. Whatever enjoyment there is in the eye, that it sang for the gods; but the seeing of what is fair it kept for itself. The demons knew, "By this singer they will overcome us." They rushed upon it and pierced it with evil. That evil is the seeing of what is unseemly; that is the evil.