A class on Srimad Bhagavatam 1.15.36 given by His Divine Grace A.C. Bhaktivedanta Swami Prabhupada on December 14, 1973 in Los Angeles, CA.
Srimad Bhagavatam 1.15.36
yadā mukundo bhagavān imāṁ mahīṁ
jahau sva-tanvā śravaṇīya-sat-kathaḥ
tadāhar evāpratibuddha-cetasām
abhadra-hetuḥ kalir anvavartata
When the Personality of Godhead, Lord Kṛṣṇa, left this earthly planet in His selfsame form, from that very day Kali, who had already partially appeared, became fully manifest to create inauspicious conditions for those who are endowed with a poor fund of knowledge.