Srimad Bhagavatam

References to text SB 1.2.6
SB 1.2.6: The supreme occupation [dharma] for all humanity is that by which men can attain to loving devotional service unto the transcendent Lord. Such devotional service must be unmotivated and uninterrupted to completely satisfy the self.

Text ā„–
Offering gifts in charity, accepting charitable gifts, revealing oneā€™s mind in conļ¬dence, inquiring conļ¬dentially, accepting prasāda and offering prasāda are the six symptoms of love shared by one devotee and another.
Nectar of Instruction
NoI 4