Vivekachudamani Verse 31

Notes: The seeking etc.—This definition is from the Advaita standpoint. Dualists who substitute Isvara, the Supreme Lord, for the Atman or Supreme Self immanent in being, of course define Bhakti otherwise. For example, Narada defines it as “sā kasmaicit paramapremarūpā”—“It is of the nature of extreme love to some Being,” and Sandilya, another authority
on the subject, puts it as “sā parānuraktirīśvare”—“It is extreme attachment to Isvara, the Lord.” On reflection it will appear that there is not much difference between the definitions of the two schools.