Viṣṇu-māhātmya-varṇana & Vamśa-prasaṅga
Genealogical Continuation
इत्येते नव मौर्या वै भोक्ष्यन्ति च वसुंधराम् / सप्तत्रिंशच्छतं पूर्णं तेभ्यः शुङ्गो गमिष्यति
ityete nava mauryā vai bhokṣyanti ca vasuṃdharām / saptatriṃśacchataṃ pūrṇaṃ tebhyaḥ śuṅgo gamiṣyati
Thus these nine Mauryas shall rule the earth; when three hundred and thirty-seven years are complete, after them the Śuṅga line shall arise.