दशशैवव्रतप्रश्नः — Inquiry into the Ten Principal Śaiva Vratas
त्रयोदश्यां सितायां तु कर्तव्यं निशि भोजनम् । असितायां तु भूतायां तत्र कार्यं शिवव्रतैः
trayodaśyāṃ sitāyāṃ tu kartavyaṃ niśi bhojanam | asitāyāṃ tu bhūtāyāṃ tatra kāryaṃ śivavrataiḥ
在明半月的第十三日(Trayodaśī),应于夜间用餐;若此第十三日落在暗半月,则当于彼时依仪修行湿婆之誓戒诸行。
Suta Goswami
Tattva Level: pashu
Shiva Form: Mahādeva
Significance: Connects tithi-dharma (trayodaśī) to Śiva-vrata performance, aligning personal discipline with temple calendar observances (esp. pradoṣa-related ethos).
Offering: naivedya
It teaches tithi-based discipline: aligning food and conduct with sacred lunar timing so that devotion (bhakti) becomes regulated, purifying, and fit for Shiva’s grace.
By prescribing when to eat and when to undertake Shiva-vrata observances, it supports outer worship of Saguna Shiva (often through Linga-puja) with inner restraint, making the offering and the worshiper ritually and mentally prepared.
Observe Shiva-vrata according to the tithi—practice night-discipline (niśā-ācāra), keep restraint in food, and accompany the vow with Shiva-japa (e.g., the Panchakshara), along with customary Shaiva marks like bhasma and Rudraksha where prescribed.