Skandapurana 8.9.23_145

8.9.23_145

bāla eva tu yatrārkastapastepe purā priye .. tena bālārka ityetannāma khyātaṃ
dharātale .. 2 ..

where the sun, while still a boy, formerly performed austerity, O dear one; / therefore this name “Bālārka” became famous on the earth.