Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 9 · Vastu, Griha Pravesha
वास्तु गृहप्रवेशश्च
प्रतिकूलमुखं गेहं रोगशोकभयप्रदम् ।सबलो मुखगेहानामेष दोषो न विद्यते ॥ ५७० ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 570.
A house that faces against him can bring illness, sorrow and fear. For houses with a strong front, this fault does not exist.
Simple meaning: A house facing against the Vastu man can bring illness, sorrow and fear.
Classical view, not medical advice.
वृत्येटिका स्वर्णरेणुधान्यशैवलसंयुतम् ।
Place a brick with gold dust, grain and moss in a pit in the middle of the house.
वस्त्वायामदलं नाभिस्तस्मादध्यंगुलत्रयम् ।
Fix the peg at the belly point of the plot. It makes sons and grandsons grow.
चतुर्विंशत्त्रयोविंशत्षोडशद्वादशांगुलैः ।
The measure is 24, 23, 16 or 12 finger-widths for the four classes. The peg is dressed with gold and cloth.