सूर्यरथनिर्णयः (चन्द्रस्य पक्षवृद्धिक्षयविधानम्)
एकरात्रिं सुराः सर्वे पितृभिस्त्वृषिभिः सह सोमस्य कृष्णपक्षादौ भास्कराभिमुखस्य च
ekarātriṃ surāḥ sarve pitṛbhistvṛṣibhiḥ saha somasya kṛṣṇapakṣādau bhāskarābhimukhasya ca
在月之黑半月初始之际,一切天神与祖灵(Pitṛ)及圣仙(Ṛṣi)同在,面向太阳修持一夜之仪,作为契合由主宰帕提(湿婆)所护持之宇宙秩序的清净奉献。
Suta Goswami (narrating the Purana to the sages of Naimisharanya; conveying a calendrical/ritual rule)
It emphasizes that Shiva-oriented worship is not only about mantra and offering, but also about kala (right sacred timing) and niyama (discipline): a one-night observance at the start of Krishna Paksha is presented as ritually potent.
By highlighting Devas, Pitrs, and Rishis acting in harmony with lunar and solar order, the verse implies Shiva as Pati—the sustaining Lord of ṛta—through whom cosmic rhythms become a means for pashus (souls) to reduce pasha (bondage) via regulated worship.
A vrata-like single-night observance (ekarātra) performed at the beginning of the dark fortnight, with the practitioner oriented toward the Sun—suggesting prescribed posture/directionality as part of puja-vidhi rather than an explicit Pashupata yoga technique.