Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
छाद्यछादकमानार्धं शरोनं ग्राह्यवर्जितम् । तत्स्वच्छन्नं च मानैक्यार्द्धांशषष्टं दशाहतम् ॥ १५५ ॥
chādyachādakamānārdhaṃ śaronaṃ grāhyavarjitam | tatsvacchannaṃ ca mānaikyārddhāṃśaṣaṣṭaṃ daśāhatam || 155 ||
Take half the measure of what is to be covered and half the measure of the covering material; remove what is not admissible; then, from that properly covered quantity, compute the result by taking one-sixtieth of the combined measure and multiplying it by ten.
Sanatkumara (teaching Narada in a technical/pramāṇa context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
Even in a Mokṣa-dharma setting, the Purāṇa preserves disciplined pramāṇa (right measure): it teaches that correct action requires removing what is “non-admissible” and proceeding with a purified, net remainder—an ethical analogue of inner purification.
Indirectly: it models careful, rule-based offering and preparation. In Bhakti, offerings and ritual supports are done with accuracy and integrity—taking only what is grāhya (fit) and rejecting what is unfit—so devotion is expressed through disciplined conduct.
Pramāṇa and applied computation (māna): a procedural formula using halves, exclusions (varjita), and a fixed fraction (1/60) scaled by ten—typical of technical instructions used in ritual preparation and allied Vedic sciences.