CC Madhya 15.274

sahaje nirmala ei ‘brāhmaṇa’-hṛdaya
kṛṣṇera vasite ei yogya-sthāna haya
Word for word: 
sahaje — by nature; nirmala — without contamination; ei — this; brāhmaṇa-hṛdaya — heart of a brāhmaṇa; kṛṣṇera — of Lord Kṛṣṇa; vasite — to sit down; ei — this; yogya-sthāna — proper place; haya — is.
Translation: 
“The heart of a brāhmaṇa is by nature very clean; therefore it is a proper place for Kṛṣṇa to sit.