Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 5
Sanskrit:
तेषां पुरस्तादभवन्नार्यावर्ते नृपा नृप ।पञ्चविंशति: पश्चाच्च त्रयो मध्येऽपरेऽन्यत: ॥ ५ ॥
ITRANS:
teṣāṁ purastād abhavannāryāvarte nṛpā nṛpapañca-viṁśatiḥ paścāc catrayo madhye ’pare ’nyataḥ
Translation:
Of the one hundred sons, twenty-five became kings in the western side of Āryāvarta, a place between the Himālaya and Vindhya mountains. Another twenty-five sons became kings in the east of Āryāvarta, and the three principal sons became kings in the middle. The other sons became kings in various other places.