Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 9 · Vastu, Griha Pravesha
वास्तु गृहप्रवेशश्च
एवं लक्षणसंयुक्तं परिकल्प्य शुभे दिने ।षड्वर्गशुद्धिसूत्रेण सूत्रिते धरणीतले ॥ ५७६ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 576.
Make a peg with these marks on a good day. Set it on ground marked out with the thread of the six-part check.
Simple meaning: Make the peg on a good day and set it on ground marked out with the thread.
मृदुध्रुवक्षिप्रभेषु रिक्तामावर्जिते दिने ।
Choose a good star and a good weekday, avoid empty days, and keep the 8th house free of bad planets.
नैधने शुद्धिसंयुक्ते शुभलग्ने शुभांशके ।
Set the peg in a good rising sign, with a clean 8th house and good planets looking at it.
ताः पुनः षड्विधाः शालाः प्रत्येकं दशषड्विधाः ।
Halls come in six kinds, each with sixteen forms. Seven names are given here.