Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 7 · Samskara Muhurtas
संस्कारमुहूर्ताः
जन्मभाद्दशमं कर्म संघातर्क्षं तु षोडशम् ।अष्टादशं समुदयं त्रयोविंशं विनाशनम् ॥ ३५८ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 358.
Count from the birth nakshatra (star). The 10th is Karma. The 16th is Sanghata. The 18th is Samudaya. The 23rd is Vinasha.
Simple meaning: Counting from the birth star, the 10th, 16th, 18th and 23rd stars are marked out.
मानसं पंचविंशर्क्षं नाचरेच्छुभमेषु तु ।
Avoid those stars. Jupiter, Mercury and Venus days are good. Moon and Sun days are middling.
वारौ तु मध्यमौ चैव व्रतेऽन्यौ निंदितौ मतौ ।
Moon and Sun days are middling. Mars and Saturn days are bad. Do god rites in the first third of the day.
द्वितीये मानुषं कार्यं तृतीयेंशे च पैतृकम् ।
God rites first, people rites second, ancestor rites third. A planet in a weak or enemy sign starts a bad case.