Question: Devotional service is always pure and transcendental, but Lord Kapiladeva says to His glorious mother Devahūti, about devotional service in goodness, passion and ignorance. How can it mix with material or material mix with devotional service?

Jayapataka Swami: Devotional service is offered for the pleasure of Kṛṣṇa, that is transcendental. If someone offers devotional service because they want to get vengeance against someone, that is in the mode of ignorance, and if they do devotional service because they want to be rich or famous or get something material, that is mixed with the mode of passion, and if they want to merge into the brahma-jyoti or somehow benefit people materially, then they will be mixed with the mode of goodness. So pure devotional service is not mixed with any of the three modes, and therefore the fruit of that is that one gets love of Kṛṣṇa. But you are advised not to desire anything material in exchange for our devotional service.
08-June-2020 SRI DHAM MAYAPUR, INDIA