Skandapurana 7.13.3

7.13.3

51 bhūyo - ka. kha . 52 naivā. - ka. kha. . 53 bādhaṃ - kha. . 54 mahātmāno - ka kha. . 55 hiraṇyavaṇa- śailendre - kha. . 56 ima - ka. kha. . 57 yaśa - kha. . 58 sarvadigdhāṅgo - ka. kha. . 59 rudraṃ yajat - śarīrasthaiḥ (?) .
680
ārdra snānāt paraṃ bhasma ārdre jantuvadho dhruvam60 .
ārdrantu prakṛtiṃ vidyāt prakṛtiṃ cāpi bandhanam . .79 . .
prakṛtestu prahāṇārthaṃ61 bhasmanā snānamiṣyate .
digvāsastvaṃ ca śaucañca yena jāyenna62 karhicit . .8.122.80 ..
yantrāṇāṃ63 paramaṃ yantra64manyadyasmānna vidyate .
ṣaḍaṅga sarvakāmīyaṃ sarvalokanamaskṛtam .. 81 . .
śuci sarvapavitraṃ65 ca sarvapāpāpahaṃ śubham .
tapaso vardhanaṃ caiva te carantu66 samāhitāḥ67 .
yantraṃ tvapāpaṃ68 vijñeyaṃ prakṛtissā ca saṃsmṛtā69 . .82 . .
bandhaśca trividhaḥ proktaḥ sanyāsaphalameva ca .
tasmāt sarvaprahāṇārthaṃ yantrametat samācaret ..03 .

[Various readings]
680
Ashes are superior to wet bathing; in wet [bathing], the destruction of living beings is certain.
One should know wetness as Prakṛti, and Prakṛti as bondage.
For the abandoning of Prakṛti, bathing with ashes is prescribed,
as well as being sky-clad and pure, so that one may never be reborn.
Among yantras, it is the supreme yantra, other than which none exists;
six-limbed, granting all desires, revered by all the worlds,
pure, all-purifying, removing all sins, auspicious,
and increasing austerity—let them practice it with focused minds.
The yantra should be understood as sinless, and that is considered Prakṛti.
Bondage is declared to be threefold, and renunciation itself has its fruit;
therefore, for the abandoning of everything, one should practice this yantra,