So kṛṣṇa-bhakti, devotional service of Kṛṣṇa, is so exalted that a devotee can kick out even mukti. They do not want. A devotee doesn't want. Just like Caitanya Mahāprabhu says:
- na dhanaṁ na janaṁ na sundarīṁ
- kavitāṁ vā jagadīśa kāmaye
- mama janmani janmanīśvare
- bhavatād bhaktir ahaitukī (tvayi)
- (CC Antya 20.29, Śikṣāṣṭaka 4)
So devotional service, this line of activities, should not be taken for some material gain. This is not bhakti. Bhakti must be pure, cent percent pure, free from all material desires, free from the resultant action of jñāna and karma. Anyābhilāṣitā-śūnyaṁ jñāna-karmādy-anāvṛtam (Brs. 1.1.11). In other words, if you are actually a devotee, you'll have no more interest with these material desires. Material desires means dharma artha kāma mokṣa (SB 4.8.41, CC Adi 1.90). They're all material desires.