Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 8 · Marriage
विवाहः
न कदाचिद्दशर्क्षेषु भानोरार्द्राप्रवेशनात् ।विवाहो देवतानां च प्रतिष्ठां चोपनायनम् ॥ ४१७ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 417.
Never while the Sun moves through the ten nakshatras (stars) from its entry into Ardra. In that time do no marriage, no installing of gods and no sacred thread.
Simple meaning: No marriage, god-installing or sacred thread while the Sun moves through the ten stars from Ardra.
नास्तंगते सिते जीवे न तयोर्बालवृद्धयोः ।
Avoid marriage when Venus or Jupiter is set, very young or old, or when Jupiter is in Leo.
पश्चात्प्रागुदितः शुक्रो दशत्रिदिवसं शिशुः ।
Venus is weak 10 or 3 days after rising and 5 or 15 before setting. Jupiter, 15 days each.
अप्रबुद्धो हृषीकेशो यावत्तावन्न मंगलम् ।
No marriage while Vishnu sleeps, and none on the day of his festival.