CC Madhya 25.178

rātre uṭhi’ prabhu yadi karilā gamana
pāche lāg la-ilā tabe bhakta pañca jana
Word for word: 
rātre uṭhi’ — rising at night; prabhu — Śrī Caitanya Mahāprabhu; yadi — when; karilā gamana — departed; pāche — behind Him; lāg la-ilā — began to follow; tabe — then; bhakta pañca jana — five devotees.
Translation: 
After rising very early on the sixth day, Śrī Caitanya Mahāprabhu started to leave, and five devotees began to follow Him.