CC Ādi 13.47

sei, anusāre likhi līlā-sūtragaṇa
vistāri’ varṇiāchena tāhā dāsa-vṛndāvana
Word for word: 
sei — that; anusāre — following; likhi — I write; līlā — pastimes; sūtra-gaṇa — notes; vistāri’ — very explicitly; varṇiyāchena — has described; tāhā — that; dāsa-vṛndāvana — Vṛndāvana dāsa Ṭhākura.
Translation: 
The notes kept by Śrī Svarūpa Dāmodara and Murāri Gupta are the basis of this book. Following those notes, I write of all the pastimes of the Lord. The notes have been described elaborately by Vṛndāvana dāsa Ṭhākura.