Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 1 · Muhurta: Marriage, Home, Farming
ज्योतिःशास्त्रम्
चूडाकरणमाद्यं च श्रावणादौ न शस्यते ।अस्तं याते गुरौ शुक्रे क्षीणे च शशलाञ्छने ॥ २७ ॥
In the full Agni Purana this is chapter 121, verse 27.
The first haircut is not praised in Shravana and the months after it. Nor when Jupiter or Venus has set, nor when the Moon is wasted.
Simple meaning: The first haircut is not good from Shravana on, or when Jupiter or Venus is set.
उपनीतस्य विप्रस्य मृत्युं जाड्यं विनिर्दिशेत् ।
A thread ceremony done in the bad times may bring death or dullness.
शुभक्षेत्रे विलग्नेषु शुभयुक्तेक्षितेषु च ।
Good signs and stars, with good planets on the lagna, suit this work.
पुनर्वसौ तथा पुष्ये धनुर्वेदः प्रशस्यते ।
Archery is praised under Punarvasu and Pushya.