Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
अंशोनाः शंत्रुभे कार्या ग्रहं वक्रगतिं विना । मंदशुक्तौ विनार्द्धोना ग्रहस्यास्तंगतस्य च ॥ १२३ ॥
aṃśonāḥ śaṃtrubhe kāryā grahaṃ vakragatiṃ vinā | maṃdaśuktau vinārddhonā grahasyāstaṃgatasya ca || 123 ||
Dalam susunan yang tidak mujur (bermusuhan), kesan planet hendaklah dianggap berkurang menurut suatu bahagian—selagi ia tidak bergerak songsang (vakra/retrograde). Dalam keadaan lemah atau perlahan, dan juga apabila planet itu terbenam/tidak kelihatan (astaṅgata), kekuatannya hendaklah diambil sebagai berkurang separuh.
Narada (teaching in a technical/vidyā mode within the Moksha Dharma section)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It frames Jyotiṣa as a dharmic tool: by correctly judging a planet’s diminished strength (weakness or setting), one avoids misguided timing and aligns actions with order (dharma), supporting steadiness on the path to mokṣa.
Indirectly: it advises discernment in worldly planning so that vows, worship, and disciplined practice are performed with fewer obstacles—helping the devotee keep consistent bhakti rather than being derailed by poorly chosen timings.
Vedāṅga Jyotiṣa: assessing graha-bala (planetary strength) using conditions like vakra (retrograde), manda (weak/sluggish), and asta (set/combust/invisible), and applying proportional reduction (aṃśa/arddha) to interpret results.