Śrīmad-Bhāgavatam · Text 10.23.26
Who is speaking and story frame
नन्वद्धा मयि कुर्वन्ति कुशला: स्वार्थदर्शिन: ।
अहैतुक्यव्यवहितां भक्तिमात्मप्रिये यथा ॥ २६ ॥
nanv addhā mayi kurvanti
kuśalāḥ svārtha-darśinaḥ
ahaituky avyavahitāṁ
bhaktim ātma-priye yathā
Certainly expert personalities, who can see their own true interest, render unmotivated and uninterrupted devotional service directly unto Me, for I am most dear to the soul.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.