Bhakti-rasāmṛta-sindhu .4.37
navyena yauvanenāpi dīvyan goṣṭhendra-nandanaḥ |
[navyena yauvanenaapi deevyan goshthendra-nandanah |]
bhāti kevala-vātsalya-bhājāṁ paugaṇḍa-bhāg iva ||37||
[bhaati kevala-vaatsalya-bhaajaam pauganda-bhaag iva ||37||]
Blended reading (Sanskrit + English inline)
navyena yauvanenāpi dīvyan goṣṭhendra-nandanaḥ |
bhāti kevala-vātsalya-bhājāṁ paugaṇḍa-bhāg iva ||37||
Though Kṛṣṇa is beautiful in the age of nava-yauvana (late kaiśora), He appears as if He were still in the paugaṇḍa age for those fixed in pure vātsalya-rasa.
Purport
When Kṛṣṇa, the beloved son of Nanda Mahārāja, steps into His kaiśora age, although He becomes more beautiful, His parents still consider Him to be in the paugaṇḍa age—even though He is between the ages of ten and fifteen.
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io