Jyotiṣa-saṅgraha: Varga-vibhāga, Bala-nirṇaya, Garbha-phala, Āyuḥ-gaṇanā
स्थिरस्थैर्यमुसलं नाम द्विशरीणतैर्नलः । भाला केंद्रस्थितैः सौम्यैः पापैस्सर्प उदाहृतः ॥ १९३ ॥
sthirasthairyamusalaṃ nāma dviśarīṇatairnalaḥ | bhālā keṃdrasthitaiḥ saumyaiḥ pāpaissarpa udāhṛtaḥ || 193 ||
स्थिर राशियों में स्थैर्य होने से इसका नाम ‘मुसल’ कहा गया है; ‘दो शरीर’ की स्थिति से इसे ‘नल’ कहते हैं। हे सौम्य! जब शुभ ग्रह केंद्रों में हों और पाप ग्रह मध्य स्थानों में हों, तब ‘सर्प’ नामक योग कहा गया है।
Narada (teaching in a technical, Vedanga-linked context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It frames Jyotiṣa (Vedic astrology) as a dharmic tool: recognizing planetary patterns (yogas/omens) helps a seeker act with awareness, restraint, and right timing—supporting steadiness (sthairya) on the path of Moksha Dharma.
Indirectly: by advising discernment through omens/yogas, it encourages devotees to align actions and vows with auspicious conditions, minimizing obstacles and keeping the mind steady for Vishnu-oriented devotion and disciplined practice.
Jyotiṣa Vedāṅga: the verse references kendra (angular houses) and classification of planetary configurations into named yogas/omens (e.g., “Sarpa”), indicating applied astrological diagnostics.