Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
भागयुक्तं च हीनं च व्ययनांशं तनुः कुजे । प्राक्पश्चान्नतनाडीभ्यस्तद्वल्लंकोदयासुभिः ॥ १५१ ॥
bhāgayuktaṃ ca hīnaṃ ca vyayanāṃśaṃ tanuḥ kuje | prākpaścānnatanāḍībhyastadvallaṃkodayāsubhiḥ || 151 ||
লগ্নে কুজ (মঙ্গল) থাকলে, প্রয়োজনীয় ভগ্নাংশ দ্বারা বৃদ্ধি ও হ্রাস—উভয়ভাবে ‘ব্যয়-অংশ’ নির্ণয় করবে; পূর্ব ও পশ্চিমের নত-নাড়ি (ছায়ামাপ) থেকেও, এবং তদ্রূপ লঙ্কা-উদয়-অসু থেকেও গ্রহণ করবে।
Sanatkumara (teaching to Narada in a technical Jyotisha/ganita passage)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It shows that Moksha-Dharma teaching in the Narada Purana also preserves Vedāṅga knowledge—disciplined time-reckoning and precise calculation—supporting correct timing for dharmic practice and study.
Indirectly: accurate Jyotiṣa calculation is presented as a supporting limb for dharma (right timing and order), which helps a devotee maintain steady sādhana; the verse itself is primarily technical rather than devotional.
Vedāṅga Jyotiṣa/astronomical computation: use of nata-nāḍī (gnomon/shadow-based measures), reference rising-time units (Laṅkā-udaya asu), and adjustment by fractional increase/decrease for determining a derived quantity (vyaya-aṃśa) when Mars is in the ascendant.