CC Madhya 7.98

sei loka prema-matta hañā bale ‘hari’ ‘kṛṣṇa’
prabhura pāche saṅge yāya darśana-satṛṣṇa
Synonyms: 
sei loka — that person; prema-matta — maddened in love of Godhead; hañā — becoming; bale — says; hari kṛṣṇa — the holy name of Lord Hari and Lord Kṛṣṇa; prabhura pāche — behind the Lord; saṅge — with Him; yāya — goes; darśana-satṛṣṇa — being very eager to see Him.
Translation: 
Whoever heard Lord Caitanya Mahāprabhu chant “Hari! Hari!” also chanted the holy name of Lord Hari and Kṛṣṇa. In this way they all followed the Lord, very eager to see Him.