Bhagavad Gita 13.32

यथा सर्वगतं सौक्ष्म्यादाकाशं नोपलिप्यते।सर्वत्रावस्थितो देहे तथाऽऽत्मा नोपलिप्यते॥

yathā sarvagataṃ saukṣmyādākāśaṃ nopalipyate |sarvatrāvasthito dehe tathā''tmā nopalipyate ||

As the all-pervading ether is not tainted, due to its subtlety, so the Self seated everywhere in the body is not tainted either.

As space, though present everywhere, remains unaffected due to its subtlety, so too the Self, though present in all forms, retains its purity unalloyed.

Our plain-language meaning of this verse is waiting for scholar review.