Bhagavatapurana 4.23.15

4.23.15

utsarpayaṃs tu taṃ mūrdhni krameṇāveśya niḥspṛhaḥ /
vāyuṃ vāyau kṣitau kāyaṃ tejas tejasy ayūyujat //

15 & 16. Carrying the breath still higher and gradually into the very crown of the head, absolved from all passions, he made

Vayu mix with Vayu, the body with earth, fire with fire, the senses (the openings constituting the sense organs) with Akasa (sky), the liquid with water and earth with water, water with fire and fire with Vayu and Vayu with Akasa — thus everything in its proper place, he contemplated them as having become one.