When there is a predominance of cheating, lying, sloth, sleepiness, violence, depression, lamentation, bewilderment, fear and poverty, that age is Kali, the age of the mode of ignorance.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यदा मायानृतं तन्द्रा निद्रा हिंसा विषादनम् । शोको मोहो भयं दैन्यं स कलिस्तामसः स्मृतः
yadā māyānṛtaṃ tandrā nidrā hiṃsā viṣādanam | śoko moho bhayaṃ dainyaṃ sa kalistāmasaḥ smṛtaḥ
SB 12.3.30