Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 7 · Samskara Muhurtas
संस्कारमुहूर्ताः
शुक्लपक्षे द्वितीया च तृतीया पंचमी तथा ।त्रयोदशी च दशमी सप्तमी व्रतबंधने ॥ ३५५ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 355.
In the bright fortnight, use the 2nd, 3rd, 5th, 7th, 10th and 13th tithis (moon days). These are for the vratabandha (thread ceremony).
Simple meaning: For the thread ceremony, choose the 2nd, 3rd, 5th, 7th, 10th or 13th day of the bright half.
श्रेष्ठा त्वेकादशी षष्ठी द्वादश्यन्यास्तु मध्यमाः ।
The 11th, 6th and 12th days are best. In the dark half, only the 2nd, 3rd and 5th are fine.
धिष्णान्यर्कत्रयांतेज्यरुद्रादित्युत्तराणि च ।
For the thread rite, good stars include Hasta, Revati, Pushya, Punarvasu, Shravana, Ashvini, Anuradha and Rohini.
जन्मभाद्दशमं कर्म संघातर्क्षं तु षोडशम् ।
Counting from the birth star, the 10th, 16th, 18th and 23rd stars are marked out.