Bhakti-rasāyana, or the nectar tonic of bhakti-rasa, consists of the commentaries on a compilation of verses from Śrīmad-Bhāgavatam’s Tenth Canto that Śrīla Sanātana Gosvāmī included in the final chapter of his Śrī Bṛhad-bhāgavatāmṛta. Like stringing pearls on a thread, he has composed a necklace of these verses for the benefit of the sādhakas (practitioners of bhakti), to stimulate the moods of bhakti in their hearts.