Shloka 20
Mind as Charioteer; Kṣetrajña, Tapas, and Dhyāna-Yoga
Adhyātma-Upadeśa
तथा कर्मसु विज्ञेयं फलं भवति वा न वा । पुरुषस्यात्मनि:श्रेय: शुभाशुभनिदर्शनम्
tathā karmasu vijñeyaṃ phalaṃ bhavati vā na vā | puruṣasyātmaniḥśreyaḥ śubhāśubhanidarśanam |
同样，在诸行（业）的领域中，当知其果或生、或不生。人于自身之内所证得的至善，便成为前世所携吉凶习气（saṃskāra，行蕴之熏习）的标记：当修持瑜伽之戒行时，成就或艰难方现，或竟不显，皆随彼潜在造作而定。
वायुदेव उवाच
Educational Q&A
Results in action are not mechanically guaranteed; fruition may occur or may not. One’s inner progress toward niḥśreyas (highest good) reveals the force of prior auspicious and inauspicious saṃskāras, explaining why yogic attainment can be difficult or delayed for some.
Vāyudeva is instructing the listener on the moral psychology of karma and spiritual practice: he frames success in yogic discipline as conditioned by past-life impressions, and urges discernment that outcomes are contingent rather than assured.