At that time the brāhmaṇas of such provinces as Śaurāṣṭra, Avantī, Ābhīra, Śūra, Arbuda and Mālava will forget all their regulative principles, and the members of the royal order in these places will become no better than śūdras.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मागधानां तु भविता विश्वस्फूर्जिः पुरञ्जयः । करिष्यत्यपरो वर्णान् पुलिन्दयदुमद्रकान्
māgadhānāṃ tu bhavitā viśvasphūrjiḥ purañjayaḥ | kariṣyatyaparo varṇān pulindayadumadrakān
SB 12.1.36