(The following is an excerpt from Brahma-vaivarta Purāṇa 4.129.49-61, with English Translation and Notes. To download the full paper, click here.)
Mahābhārata 3.188.41
brāhmaṇāḥ kṣatriyā vaiśyā na śiṣyanti janādhipa
eka-varṇas tadā loko bhaviṣyati yuga-kṣaye
“There will be no brāhmaṇas, kṣatriyas and vaiśyas left, O king. At the time of destruction due to that yuga, the people will be of only one varṇa.”
(To see notes for this translation, click here to download the full paper.)