Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 7 · Samskara Muhurtas
संस्कारमुहूर्ताः
पट्टबंधनचौलान्नप्राशने चोपनायने ।शुभदं जन्मनक्षत्रमशुभं त्वन्यकर्मणि ॥ ३३८ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 338.
The birth star is good for the headband tying and the first haircut. It is also good for the first feeding of grain and the sacred thread rite. For other rites it is bad.
Simple meaning: The birth star is good for these four rites and bad for other rites.
अष्टमे शुद्धिसंयुक्ते शुभलग्ने शुभांशके ।
A clean 8th house, a good rising sign, and the Moon away from the 8th, 6th and 12th help this rite.
धनत्रिकोणकेंद्रस्थैः शुभैस्त्र्यायारिगैः परैः ।
Shave with good planets well placed. Not after oiling, at twilight, on Tuesday, at night, after eating or in battle.
नोत्कटे भूषिते नैव याने न नवमेऽहि च ।
Do not shave when decked out, on a journey or on the 9th day. Kings shave every 5th day.