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CC Ādi 13.26

bālya vayasa — yāvat hāte khaḍi dila
paugaṇḍa vayasa — yāvat vivāha nā kaila
Synonyms: 
bālya vayasa — childhood age; yāvat — until the time; hāte — in His hand; khaḍi — chalk; dila — was given; paugaṇḍa vayasa — the part of boyhood known as paugaṇḍa; yāvat — until; vivāha — marriage; — not; kaila — did take place.
Translation: 
His childhood lasted until the date of hāte khaḍi, the beginning of His education, and His age from the end of His childhood until He married is called paugaṇḍa.