Srila Prabhupada – Devotee means pure devotee , anyābhilāṣitā-śūnyam, without any other desires. Devotee means he wants to serve Kṛṣṇa, that’s all . Not that in return he wants something. He is devotee. Devotion is not business: “Sir, I have come to Your temple. I am offering my obeisances. Now, my salary is five hundred dollars. Kindly make it two thousand.” That is also devotion… Not devotion, that is appreciation of God, that “God can give me.” That is also good…. But devotee means he does not ask anything from God. He simply wants to give , that is devotee. Just like gopīs. They never asked anything from Kṛṣṇa .

(Lecture on SB 1.3.7 — Los Angeles, September 13, 1972)