Anandakanda 1.23.427

1.23.427

trilohaveṣṭitaṃ vaktre dhṛtvā cādṛśyatāṃ vrajet /
oṃ namo rudrāya daṃṣṭrotkaṭāya vighnaṃ nāśaya nāśaya diśo rakṣa rakṣa rudro jñāpayati huṃ phaṭ svāhā /
iti digbandhamantraḥ /
oṃ namo bhagavate rudrāya triśūlahastāya amṛtodbhava rakṣa rakṣa huṃ phaṭ svāhā /
iti pānamantraḥ /
<viṣodakabandhaḥ>
athātaḥ sampravakṣyāmi viṣodarasabandhanam //

Wrapped in the three metals and held in the mouth, one achieves invisibility.
'Om, salutations to Rudra of terrifying fangs! Destroy, destroy the obstacle! Protect, protect the quarters! Rudra commands: hum phat svāhā!'
Thus the mantra for binding the quarters.
'Om, salutations to the Blessed Lord Rudra, holding a trident in hand! O child of nectar, protect, protect, hum phat svāhā!'
Thus the mantra for drinking.
<Fixation with Poison-Water>
Now, therefore, I shall explain the fixation of mercury with poison-water.