Srimad Bhagavatam Canto 10, Chapter 12, Text 01

SB 10.12.1

sri-suka uvaca
kvacid vanasaya mano dadhad vrajat
pratah samutthaya vayasya-vatsapan
prabodhayañ chrnga-ravena caruna
vinirgato vatsa-purahsaro harih
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Sukadeva Gosvami continued: O King, one day Krsna decided to take His breakfast as a picnic in the forest. Having risen early in the morning, He blew His bugle made of horn and woke all the cowherd boys and calves with its beautiful sound. Then Krsna and the boys, keeping their respective groups of calves before them, proceeded from Vrajabhumi to the forest.
Srimad Bhagavatam Canto 10, Chapter 12, Text 02