Bhagavad Gita, Chapter 15, Verse 11

यतन्तो योगिनश्चैनं पश्यन्त्यात्मन्यवस्थितम् । यतन्तोऽप्यकृतात्मानो नैनं पश्यन्त्यचेतसः

yatanto yoginaścainaṃ paśyantyātmanyavasthitam | yatanto'pyakṛtātmāno nainaṃ paśyantyacetasaḥ

Translation

Those who strive, endued with Yoga, perceive Him dwelling in the self; though striving, those of unrefined self, devoid of wisdom, perceive Him not.

— Alladi Mahadeva Sastri

Word meanings

yatantaḥ
striving
yoginaḥ
yogis
ca
and
enam
this
paśyanti
see
ātmani
in the Self
avasthitam
established
yatantaḥ
striving
api
also
akṛtātmānaḥ
not, made (purified), the Self, by whom, they
na
not
enam
this
paśyanti
see
acetasaḥ
mindless

Śaṅkarācārya's commentary

Those who strive, well balanced in their mind, behold Him, the Self, dwelling in their own mind (buddhi): they recognise Him, "This I am." But though striving to know Him by means of proper authorities such as the scriptures (śāstra), men of unrefined self — whose self has not been regenerated by austerity (tapas) and subjugation of the senses, who have not abandoned their evil ways, whose pride has not been subdued — behold Him not.