3.21
apane na kaile dharma sikhana na yaya
ei ta’ siddhanta gita-bhagavate gaya
SYNONYMS
apane—personally; na kaile—if not practiced; dharma—religion; sikhana—the teaching; na yaya—does not advance; ei—this; ta’-certainly; siddhanta—conclusion; gita—in the Bhagavad-gita; bhagavate—in Srimad-Bhagavatam; gaya—they sing "Unless one practices devotional service himself, he cannot teach it to others.
This conclusion is indeed confirmed throughout the Gita and Bhagavatam.