execution of service that do not lead to devotional service of Vasudeva are useless labor

[jaimin]

If you try to serve, in devotional service, Krsna, then all these
principles of religions will automatically come. You will know that "I
am not this body, I am a spirit soul. I have... The material
attachment is useless for me. My real business is spiritual
advancement of life." Everything will be clear if you simply execute
devotional service of Krsna. Vasudeve bhagavati. Dharmah svanusthitah
pumsam visvaksena kathasu yah [SB 1.2.8]. Again, (indistinct) one may
execute very nicely his prescribed duties according to his religion,
very good boy, but if he does not develop to hear about Krsna, or God,
this propensity... Just like you are sitting here to hear about
Bhagavata. Why? This is very nice symptom. You are developing to hear
some things about God, or Krsna. These tendencies. The temple,
somebody comes to hear. Not all. Because they have no development.
Life is wanted. So dharmah svanustha... You may do your duty very
nicely, you may be very moralist or philanthropist or so many they
have manufactured. You may become everything. But if you have not that
propensity to hear something about God, then all these are srama eva
hi kevalam [SB 1.2.8], simply laboring, laboring, laboring. That's
all. That means wasting time.

>>> Ref. VedaBase => Conversation Including Srimad-Bhagavatam 1.2.1-34 Recitation & Explanation -- April 1, 1969, San Francisco