Anandakanda 1.2.138

1.2.138

bubhukṣūṇāṃ hi sakalaṃ niṣkalaṃ mokṣamicchatām /
rasaliṅgaṃ hemabaddhaṃ brahmaviṣṇvīśavahnayaḥ //

The composite is for those desiring enjoyment, while the uncompounded is for those desiring liberation.
Brahmā, Viṣṇu, Īśa, and Agni [worshipped] the mercury-liṅga bound with gold;