Devibhagavatapurana 8.8.11

Devībhāgavatapurāṇa 8.8.11

ātmanā dhyānayogena sarvabhūtahitecchayā |
tāṃ tāmasīṃ turīyāṃ ca mūrtiṃ prakṛtimātmanaḥ ||