ananya-mamatÄ viṣṇau
mamatÄ prema-saá¹…gatÄ
bhaktir ity ucyate bhīṣma-
prahlÄdoddhava-nÄradaiḥ
ananya-mamatÄ - having a sense of relationships with no others; viṣṇau - in Lord Viṣṇu, or Kṛṣṇa; mamatÄ - the sense of ownership; prema-saá¹…gatÄ - endowed only with love; bhaktiḥ - devotional service; iti - thus; ucyate - is said; bhÄ«á¹£ma - by BhÄ«á¹£ma; prahlÄda - by PrahlÄda MahÄrÄja; uddhava - by Uddhava; nÄradaiḥ - and by NÄrada.
This verse, quoted from the NÄrada-pañcarÄtra, is found in the Bhakti-rasÄmá¹›ta-sindhu (1.4.2).