Pāśupata-vrata Māhātmya: Dvādaśa-Liṅga Mahāvrata, Month-wise Dravya, and Pūjā-krama
अथवा ह्येकमासं वा चरेदेवं व्रतोत्तमम् शिवलोकमवाप्नोति नात्र कार्या विचारणा
athavā hyekamāsaṃ vā caredevaṃ vratottamam śivalokamavāpnoti nātra kāryā vicāraṇā
Ou então, ainda que se observe este voto supremo por apenas um mês, certamente se alcança Śiva-loka; quanto a isso, não há necessidade de dúvida nem de deliberação.
Suta Goswami (narrating Linga Purana teachings to the sages of Naimisharanya)
It asserts the certainty of fruit (vrata-phala): even a month-long observance of the highest Shaiva vow connected with Shiva worship leads to Śiva-loka, emphasizing faith and disciplined practice over duration.
Śiva is presented as Pati—the sovereign bestower of liberation and divine abode—whose grace makes the result certain when the devotee (paśu) follows the prescribed vow with steadiness.
A Shaiva vrata (vow-observance) centered on Śiva/Liṅga worship; it aligns with Pāśupata discipline by stressing niyama (rule-bound practice) and unwavering conviction in the promised result.