puruṣottamayoga - Verse śloka 11
śloka 11
yatanto yoginaścainaṃ paśyantyātmanyavasthitam |
yatanto'pyakṛtātmāno nainaṃ paśyantyacetasaḥ ||15-11||
Translation
The Yogis behold the Atman dwelling in their hearts through effort; but those with impure inner being and lacking discrimination do not see Him even when they strive.