Love of Krsna can be achieved only by unalloyed devotional service to him

[jaimin]

na sadhayati mam yogo
na sankhyam dharma uddhava
na svadhyayas tapas tyago
yatha bhaktir mamorjita

SYNONYMS
na -- not; sadhayati -- brings under control; mam -- Me; yogah -- the
yoga system; na -- nor; sankhyam -- the system of Sankhya philosophy;
dharmah -- pious activities within the varnasrama system; uddhava --
My dear Uddhava; na -- not; svadhyayah -- Vedic study; tapah --
austerity; tyagah -- renunciation; yatha -- as; bhaktih -- devotional
service; mama -- unto Me; urjita -- strongly developed.

TRANSLATION
My dear Uddhava, the unalloyed devotional service rendered to Me by My
devotees brings Me under their control. I cannot be thus controlled by
those engaged in mystic yoga, Sankhya philosophy, pious work, Vedic
study, austerity or renunciation.

>>> Ref. VedaBase => SB 11.14.20