One who is Kṛṣṇa's devotee, pure devotee...
- anyābhilāṣitā-śūnyaṁ
- jñāna-karmādy-anāvṛtam
- ānukūlyena kṛṣṇānu-
- śīlanaṁ bhaktir uttamā
- (Bhakti-rasāmṛta-sindhu 1.1.11)
Pure devotee means he has no other desire, no material desire. Anyābhilāṣitā-śūnyam, zero.