Garudapurana 1.22

The glorious Garuḍa Mahāpurāṇa — 22
Sūta said:
I shall explain the worship of Śiva, the supreme giver of enjoyment and liberation,
peaceful, all-pervading, empty, residing in the twelve morae.

The five faces are short [vowels], the limbs are long [vowels] with a bindu;
one should pronounce the weapon [mantra] with a visarga; Śiva is above, and likewise again,

below with the sixth [vowel], the great mantra "haum", the bestower of all aims.
With both hands he should touch the feet, and from the feet upward to the head.

Indeed, the great mudrā of all; he should perform the placement on hands and limbs;
and with the palm of his hand he should purify the back with the weapon mantra.

Starting with the little finger, he should place the limbs up to the index finger;
I shall fully explain the worship in the pericarp of that heart lotus.

One should worship righteousness, knowledge, detachment, lordship, and the rest with the heart mantra. / One should offer invocation, installation, water for the feet, and guest-water with the heart mantra.

One should perform sipping water, bathing, and worship equally in a single receptacle. / I shall explain the procedure for the fire rites: one should make the furrow lines with the weapon mantra.

Sprinkling should be done with the armour mantra, and the placement of Śakti should be performed with the heart mantra. / Or in the heart, or in the pit of Śakti, one should cast Agni, knower of beings.

Having performed [the rites] beginning with conception, down to the final expiation, / having performed all the rites with the heart mantra, one should make oblations to Śiva along with his limbs.

One should worship Śambhu marked with poison in the lotus pericarp within the maṇḍala, / a maṇḍala of sixty-four squares, or eight and so forth, or zero-eyes (twenty), or ether and so forth.

In the south-east, following the measure of zero-eyes-Indra-sun (twelve hundred and twenty) or all-ether-Veda-moon (fourteen hundred), / one should construct an auspicious hearth resembling a crescent moon.

Established in the fire scriptures, the host of limbs beginning with the heart is stated. / The weapon mantra is in the directions, and Sadāśiva is in the pericarp of the auspicious lotus.

I shall speak of initiation established in the five realities, beginning with earth, in the supreme. / Cessation with earth, installation and the rest, knowledge is fire, just as peace is one's own.

Transcending peace becomes ether; beyond that is the tranquil, imperishable [state]. / Oblations of a hundred for each one; thus one should offer oblations for the five.

Afterward, having given the final oblation, one should remember Śiva who grants grace. / For the sake of purification through expiation, [offering] eight oblations for each in sequence,

one should offer oblations with the seed-syllable of the weapon mantra; thus one should conclude the initiation. / Distinct from ritual worship, this excellent consecration is to be kept secret.

For one who is thus purified by the consecration, the state of Śiva certainly arises.

Thus, in the holy Garuḍa Mahāpurāṇa, in the first section named the Pūrvakhaṇḍa, in the Ācārakāṇḍa, ends the twenty-second chapter entitled 'The Method of Worship of Śiva'.