Anandakanda 1.6.50

1.6.50

etat sarvaṃ rasānāṃ tu krāmaṇaṃ pūrvavad bhavet /
sahasrāyuḥpradaḥ sūto brahmatvaṃ vidadhāti saḥ //

The pervasion process of all these mercuries should be as before. / Quicksilver bestowing a lifespan of a thousand years produces the state of Brahmā;