CC Ādi 15.31

vistāriyā varṇilā tāhā vṛndāvana-dāsa
ei ta’ paugaṇḍa-līlāra sūtra-prakāśa
Word for word: 
vistāriyā — having elaborated; varṇilā — has described; tāhā — that; vṛndāvana-dāsa — Ṭhākura Vṛndāvana dāsa; ei ta’ — this is; paugaṇḍa-līlāra — of the pastimes of His early age; sūtra-prakāśa — manifestation of the synopsis.
Translation: 
Vṛndāvana dāsa Ṭhākura has elaborately described all these pastimes of the Lord’s early age. What I have given is but a condensed presentation of the same pastimes.