When this age appears, Keshava (Vishnu) assumes a black colour. The Vedas, the Institutes, the virtue, the sacrifices and religious observances all fall into disuse.
तामसं युगमासाद्य कृष्णो भवति केशवः। वेदाचाराः प्रशाम्यन्तिधर्मयज्ञक्रियास्तथा॥