Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
इत्येतद्गणितो किंचित्प्रोक्तं संक्षेपतो द्विज । जातकं वाच्मि समयाद्राशिसंज्ञापुरःसरम् ॥ १८७ ॥
ityetadgaṇito kiṃcitproktaṃ saṃkṣepato dvija | jātakaṃ vācmi samayādrāśisaṃjñāpuraḥsaram || 187 ||
So habe ich, o Zweimalgeborener, kurz ein Weniges von dieser rechnerischen Berechnung dargelegt. Nun werde ich, der rechten Ordnung folgend und beginnend mit den Bezeichnungen der Rāśis (Tierkreiszeichen), das Jātaka, die Geburtsastrologie, erläutern.
Narada
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It frames Jyotiṣa as an ordered śāstric discipline—moving from gaṇita (calculation) to jātaka (application)—implying that right knowledge proceeds step-by-step and should be taught systematically.
Indirectly: by emphasizing disciplined learning and proper sequence, it supports the broader Purāṇic ideal that one should align life’s actions with dharma—an attitude that steadies the mind for Viṣṇu-bhakti even when studying technical sciences.
Vedāṅga Jyotiṣa: it signals a shift from mathematical astronomy/astrological computation (gaṇita) to natal horoscopy (jātaka), beginning with rāśi-saṃjñā (the technical nomenclature of zodiacal signs).