अच्छेद्योऽयमदाह्योऽयमक्लेद्योऽशोष्य एव च। नित्यः सर्वगतः स्थाणुरचलोऽयं सनातनः ॥

achchhedyo ’yam adāhyo ’yam akledyo ’śhoṣhya eva cha nityaḥ sarva-gataḥ sthāṇur achalo ’yaṁ sanātanaḥ

Uncleavable he, incombustible he, and indeed neither to be wetted nor dried away; perpetual, all-pervasive, stable, immovable, ancient.

In plain words: The soul cannot be cut, burned, wetted or dried. It is eternal, present everywhere, steady, unmoving and very ancient.