Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 7 · Samskara Muhurtas
संस्कारमुहूर्ताः
स्थितो ध्वजे वृषाये वा नष्टाचेत्पूर्वतो व्रणम् ।सिंहे गजे मध्यभागे त्वंतभागे श्वकाकयोः ॥ ३९० ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 390.
Say the count stands at the Dhvaja (banner) or Vrisha (bull) aya (the eight directions points). Say the blade is marred. Then the flaw is in the front part. With Simha (lion) and Gaja (elephant), it is in the middle part. With Shva (dog) and Kaka (crow), it is in the end part.
Simple meaning: The aya shows where the blade's flaw lies: front, middle or end.
धृम्रगर्द्दभयोर्नैव व्रणं श्रेयोंत्यभागगम् ।
Dhuma and the ass mean no flaw in the blade. Next come the rules for the return-home rite.
द्विजातीनां गुरोर्गेहान्निवृत्तानां यतात्मनाम् ।
For men back from the teacher's house, good stars are Chitra, the Uttaras, Punarvasu, Pushya, Revati, Shravana, Anuradha and Rohini.
भेष्वर्केंदुज्ञेज्यशुक्रवारलग्नांशकेषु च ।
Use those stars and the Sun, Moon, Mercury, Jupiter or Venus days. Avoid the 1st, 8th, empty days and new moon.