CC Madhya 22.149
tāra anugata bhaktira ‘rāgānugā’-nāme
“The original inhabitants of Vṛndāvana are attached to Kṛṣṇa spontaneously in devotional service. Nothing can compare to such spontaneous devotional service, which is called rāgātmikā bhakti. When a devotee follows in the footsteps of the devotees of Vṛndāvana, his devotional service is called rāgānugā bhakti.
In his Bhakti-sandarbha, Jīva Gosvāmī states:
tad evaṁ tat-tad-abhimāna-lakṣaṇa-bhāva-viśeṣeṇa svābhāvika-rāgasya vaiśiṣṭye sati tat-tad-rāga-prayuktā śravaṇa-kīrtana-smaraṇa-pāda-sevana-vandanātma-nivedana-prāyā bhaktis teṣāṁ rāgātmikā bhaktir ity ucyate. . . . tatas tadīyaṁ rāgaṁ rucyānugacchantī sā rāgānugā.
When a pure devotee follows the footsteps of a devotee in Vṛndāvana, he develops rāgānugā bhakti.