Śatapatha Brāhmaṇa ("of a hundred paths") 1.4.3.17

1.4.3.17

yadi saptamyāṃ ... yāccakṣurvā etadātmano 'gnāvādhāścakṣuṣātmana ārttimāriṣyasyandho bhavi ... syāt

If any one were to curse him at the seventh (verse), he should say to him, 'Thereby thou hast put thine own eye into the fire: by that eye of thine shalt thou undergo suffering, thou shalt become blind!' for this is what would take place.