“Ahaituky apratihata: unconditional devotional service cannot be checked by any material condition. This means that one does not have to be very rich to serve the Supreme Personality of Godhead. Even the poorest man can equally serve the Supreme Personality of Godhead if he has pure devotion. If there is no ulterior motive, devotional service cannot be checked by any material condition.” (Shrila Prabhupada, Chaitanya Charitamrita, Madhya 1.161 Purport)