Skanda Purana 16.301

The Lord said: / Then one should go, O Great Goddess, to the unexcelled Siddheśvara, / situated on its eastern side, not very far away. (1)

When the gods assembled and swiftly consecrated the Śiva-liṅga, / richly named Saṅgāleśvara, auspicious and dispelling all sins, (2)

then all the hosts of Siddhas, having propitiated him whose banner bears a bull, / established a liṅga that bestows all perfections, (3)

richly named Siddheśvara, the destroyer of great sins. / Then the hosts of Siddhas praised Śiva with various hymns. (4)

Then Mahādeva was pleased: 'Ask for an excellent boon!' / Bowing down, they all then said to the moon-crested Lord: (5)

'Whoever, coming here and bathing according to the rules, / should worship Siddhanātha and recite the Śatarudrīya, (6)

or should recite the Aghora mantra, or the Gāyatrī to Maheśvara, / and recite it within six months, O best of sages, / he will surely attain perfection and the sovereign power of [siddhis like] minuteness and the rest.' (7)

The Lord said: / Having said, 'So shall it be,' Hara disappeared. / Having worshipped Siddheśvara and recited the Aghora [mantra], (8)

in the dark fortnight of Āśvina on the fourteenth day at dead of night, / relying on courage, fearless, that person attains perfection. (9)

Thus this sin-destroying māhātmya of god Siddheśvara / that grants the fruit of all desires has been related, O Goddess. (7.1.301.10)

Thus ends the three hundred and first chapter, named 'Description of the Māhātmya of Siddheśvara', in the first [section,] the Prabhāsakṣetramāhātmya, in the seventh Prabhāsakhaṇḍa, in the glorious Skanda Mahāpurāṇa, a compendium of eighty-one thousand [verses]. (301)