CC Madhya 15.130

mukundere kahe punaḥ madhura vacana
‘tomāra kārya — dharme dhana-upārjana
Word for word: 
mukundere — to Mukunda; kahe — Lord Caitanya Mahāprabhu says; punaḥ — again; madhura vacana — sweet words; tomāra kārya — your duty; dharme dhana-upārjana — to earn both material and spiritual wealth.
Translation: 
Śrī Caitanya Mahāprabhu again spoke to Mukunda with sweet words: “Your duty is to earn both material and spiritual wealth.