Matsyapurana 128.6

128.6

sa saṃbhṛtya prakāśārthaṃ tridhā tulyo 'bhavatpunaḥ
pācako yastu loke 'smin pārthivaḥ so 'gnirucyate //

Gathering [himself] together for the sake of illumination, he became equal threefold again: / that which cooks in this world is called terrestrial fire;