"So to love Kṛṣṇa, we don't require anything. Ahaituky apratihatā (SB 1.2.6). It is open for everyone. But we should learn to sacrifice for Kṛṣṇa. That is the sign of love. Yat karoṣi yad aśnāsi yaj juhoṣi (BG 9.27). If you... You are eating. If you simply decide that 'I shall not eat anything which is not offered to Kṛṣṇa,' then Kṛṣṇa will understand, 'Oh, here is a devotee.' 'I shall not see anything except Kṛṣṇa's beauty,' Kṛṣṇa can understand. 'I shall not hear anything except Hare Kṛṣṇa and topics on Kṛṣṇa...' These things are there.
It does not require that you become very wealthy, very beautiful or very learned. You have to decide that 'I shall not do this without Kṛṣṇa. I shall not do this without Kṛṣṇa. I shall not mix with any man who is not Kṛṣṇa conscious. I shall not talk anything which does not speak about Kṛṣṇa.'
So your... 'I shall not go anywhere except Kṛṣṇa's temple. I shall not engage my hands in anything except Kṛṣṇa's business.' In this way, if you train your activities, then you love Kṛṣṇa and Kṛṣṇa is purchased— simply by your determination. Kṛṣṇa does not require anything from you. Simply He wants to know whether you have decided to love Kṛṣṇa. That's all.
Ahaituky apratihatā. Ahaituky apratihatā means it is not dependent on anything. You can yourself automatically, by whatever asset you have got—thinking, feeling, walking, eating, sleeping—whatever you have got. By such things, by using those things in Kṛṣṇa consciousness, you can purchase Kṛṣṇa. This is the Kṛṣṇa consciousness movement.
You haven't got to acquire something extra for loving Kṛṣṇa or purchasing Kṛṣṇa. Kṛṣṇa becomes purchased. Therefore... Kṛṣṇa cannot be purchased. His name is Ajita. He cannot be conquered, but His devotee can purchase Him, can conquer Him."
(Srila Prabhupada Lecture, Montreal, August 23, 1968)