दशशैवव्रतप्रश्नः — Inquiry into the Ten Principal Śaiva Vratas
प्रत्यष्टम्यां प्रयत्नेन कर्तव्यं नक्तभोजनम् । कालाष्टम्यां विशेषेण हरे त्याज्यं हि भोजनम्
pratyaṣṭamyāṃ prayatnena kartavyaṃ naktabhojanam | kālāṣṭamyāṃ viśeṣeṇa hare tyājyaṃ hi bhojanam
On the day preceding the Aṣṭamī, one should diligently observe naktabhojana, eating only at night. But on the Kālāṣṭamī in particular, O Hara, food is to be wholly renounced.
Suta Goswami
Tattva Level: pashu
Shiva Form: Mahākāla
Jyotirlinga: Mahākāleśvara
Sthala Purana: Mahākāla is revered as the Lord of Time who grants protection from untimely death and fear; Kālāṣṭamī observance aligns with propitiating Śiva as Kāla/mahākāla through fasting and restraint.
Significance: Austerity on Kālāṣṭamī is held to pacify time-bound afflictions and purify pāśa; pilgrimage to Mahākāleśvara is sought for fearlessness and spiritual steadiness.
Shakti Form: Kālī
Role: destructive
Cosmic Event: Kālāṣṭamī (time-associated aṣṭamī observance; liminal ‘kāla’ emphasis)
It teaches tapas (austerity) through regulated eating: restraint on the eve of Aṣṭamī and complete fasting on Kālāṣṭamī, offered as a devotional discipline to Hara that purifies the mind for Shiva-bhakti.
Food-restraint is presented as an offering of self-control to Saguna Shiva (Hara) during vrata-days; such discipline supports focused Linga-puja by reducing tamas and strengthening devotional steadiness.
Observe naktabhojana on the prior day and upavasa (fasting) on Kālāṣṭamī, and pair it with Shiva-japa (e.g., Om Namaḥ Śivāya) and simple Linga worship with a purified, restrained mind.