CC Madhya 7.97

ei śloka paḍi’ pathe calilā gaurahari
loka dekhi’ pathe kahe, — bala ‘hari’ ‘hari’
Word for word: 
ei śloka paḍi’ — reciting this verse kṛṣṇa! kṛṣṇa!; pathe — on the way; calilā — went; gaurahari — Lord Śrī Caitanya Mahāprabhu; loka dekhi’ — seeing other people; pathe — on the way; kahe — He says; bala — say; hari hari — the holy name of Lord Hari.
Translation: 
Chanting this verse, Lord Śrī Caitanya Mahāprabhu, known as Gaurahari, went on His way. As soon as He saw someone, He would request him to chant “Hari! Hari!”