na sādhayati māṁ yogo
na sāṅkhyaṁ dharma uddhava
na svādhyāyas tapas tyāgo
yathā bhaktir mamorjitā
na - never; sādhayati - causes to remain satisfied; mām - Me; yogaḥ - the process of control; na - nor; sāṅkhyam - the process of gaining philosophical knowledge about the Absolute Truth; dharmaḥ - such an occupation; uddhava - My dear Uddhava; na - nor; svādhyāyaḥ - study of the Vedas; tapaḥ - austerities; tyāgaḥ - renunciation, acceptance of sannyāsa, or charity; yathā - as much as; bhaktiḥ - devotional service; mama - unto Me; ūrjitā - developed.
This and the following verse are quoted from Śrīmad-Bhāgavatam (11.14.20-21). The explanation for this verse is given in Ādi-līlā 17.76.