Śivapurāṇa, Books 1 and 7 · Chapter 7.1.28

iti śrīśivamahāpurāṇe saptamyāṃ vāyavīyasaṃhitāyāṃ pūrvakhaṇḍe saptaviṃśo 'dhyāyaḥ
Chapter 28
ṛṣaya ūcuḥ
devīṃ samādadhānena devenedaṃ kimīritam
agniṣomātmakaṃ viśvaṃ vāgarthātmakamityapi

ājñaikasāramaiśvaryamājñā tvamiti coditam
tadidaṃ śrotumicchāmo yathāvadanupūrvaśaḥ

vāyuruvāca
agnirityucyate raudrī ghorā yā taijasī tanuḥ
somaḥ śākto 'mṛtamayaḥ śakteḥ śāntikarī tanuḥ

amṛtaṃ yatpratiṣṭhā sā tejo vidyā kalā svayam
bhūtasūkṣmeṣu sarveṣu ta eva rasatejasī

dvividhā tejaso vṛttisūryātmā cānalātmikā
tathaiva rasavṛttiśca somātmā ca jalātmikā

vidyudādimayantejo madhurādimayo rasaḥ
tejorasavibhedaistu dhṛtametaccarācaram

agneramṛtaniṣpattiramṛtenāgniredhate
ata eva hi vikrāntamagnīṣomaṃ jagaddhitam

haviṣe sasyasampattirvṛṣṭiḥ sasyābhivṛddhaye
vṛṣṭereva havistasmādagnīṣomadhṛtaṃ jagat

agnirūrdhvaṃ jvalatyeṣa yāvatsaumyaṃ parāmṛtam
yāvadagnyāspadaṃ saumyamamṛtaṃ ca sravatyadhaḥ

ata eva hi kālāgniradhastācchaktirūrdhvataḥ
yāvadādahanaṃ cordhvamadhaścāplāvanaṃ bhavet

ādhāraśaktyaiva dhṛtaḥ kālāgnirayamūrdhvagaḥ
tathaiva nimnagaḥ somaśśivaśaktipadāspadaḥ

śivaścordhvamadhaśśaktirūrdhvaṃ śaktiradhaḥ śivaḥ
taditthaṃ śivaśaktibhyānnāvyāptamiha kiñcana

asakṛccāgninā dagdhaṃ jagadyadbhasmasātkṛtam
agnervīryamidaṃ cāhustadvīryaṃ bhasma yattataḥ

yaścetthaṃ bhasmasadbhāvaṃ jñātvā snāti ca bhasmanā
agnirityādibhirmantrairbaddhaḥ pāśātpramucyate

agnervīryaṃ tu yadbhasma somenāplāvitampunaḥ
ayogayuktyā prakṛteradhikārāya kalpate

yogayuktyā tu tadbhasma plāvyamānaṃ samantataḥ
śāktenāmṛtavarṣeṇa cādhikārānnivartayet

ato mṛtyuṃjayāyetthamamṛtaplāvanaṃ sadā
śivaśaktyamṛtasparśe labdhaṃ yena kuto mṛtiḥ

yo veda dahanaṃ guhyaṃ plāvanaṃ ca yathoditam
agnīṣomapadaṃ hitvā na sa bhūyo 'bhijāyate

śivāgninā tanuṃ dagdhvā śaktisaumyā mṛtena yaḥ
plāvayedyogamārgeṇa so 'mṛtatvāya kalpate

hṛdi kṛtvemamarthaṃ vai devena samudāhṛtam
agnīṣomātmakaṃ viśvaṃ jagadityanurūpataḥ