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.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तेषां पुरस्तादभवन्नार्यावर्ते नृपा नृप । पञ्चविंशतिः पश्चाच्च त्रयो मध्येऽपरेऽन्यतः
teṣāṃ purastādabhavannāryāvarte nṛpā nṛpa | pañcaviṃśatiḥ paścācca trayo madhye'pare'nyataḥ
SB 9.6.5