Srimad Bhagavatam Canto 10, Chapter 23, Text 26

SB 10.23.26

nanv addha mayi kurvanti
 kusalah svartha-darsinah
ahaituky avyavahitam
 bhaktim atma-priye yatha
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.
The Supreme Lord informed the brahmanas’ wives that not only they but all people who recognize their true self-interest take to the spiritual process of loving service to the Lord. Lord Krsna is atma-priya, the real object of love for everyone. Although each individual has his own taste and freedom, ultimately every living being is a spiritual spark of the Supreme Personality of Godhead; thus everyone’s primary loving attraction is constitutionally meant for Lord Sri Krsna. Loving service to the Lord should be ahaituki, without personal motive, and avyavahita, unobstructed by mental speculation, selfish desire or any quirk of time and circumstance.
Srimad Bhagavatam Canto 10, Chapter 23, Text 25
Srimad Bhagavatam Canto 10, Chapter 23, Text 27