Bhagavatapurana 11.28.25.p2

11.28.25.p2

yathā nabho vāyv-analāmbu-bhū-guṇair $ gatāgatair vartu-guṇair na sajjate &

26. Just as the sky is not affected by the qualities of the air, fire, water, and earth, or by those of the seasons that come and go, so also the imperishable Perfect Being higher than Ahaṅkāra (unchanging eternal principal of Ātman involved in the notion of Ahaṃ) (V. is not touched by the dirt of Satva, Rajas and Tamas which are the causes of saṃsāra (or which lead to mistaking the body for Ātman V.)