Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
खयुगैरायुरंशाः स्युस्तत्संस्कारं वदामि ते । ग्रहनलग्नं षड्रात्यं चेत्संस्कारोऽन्यथा नहि ॥ १३० ॥
khayugairāyuraṃśāḥ syustatsaṃskāraṃ vadāmi te | grahanalagnaṃ ṣaḍrātyaṃ cetsaṃskāro'nyathā nahi || 130 ||
The portions of one’s lifespan are indicated by the yugas; I shall tell you the corresponding corrective rite (saṃskāra). If the ascendant at the time of an eclipse endures for six nights, then the saṃskāra is to be performed; otherwise, it is not to be done in that manner.
Sanatkumara (in instruction to Narada within the Moksha-Dharma discourse)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhayanaka
It links dharmic living with cosmic order, teaching that remedial rites (saṃskāras) should be aligned with precise celestial conditions rather than performed arbitrarily.
While not directly prescribing bhakti practices, it supports a bhakti-informed dharma: devotees honor divine order by following scriptural timing rules, treating ritual discipline as an offering grounded in śāstra.
Jyotiṣa (Vedic astrology/astronomy): it uses eclipse (grahaṇa) conditions and lagna duration (six-night criterion) to determine whether a specific saṃskāra/remedial rite is valid.