वास्तुमण्डलम्The maṇḍala of Vāstu
Verse 52
ततश्चतुर्षु कोणेषु कोणरेखान्वितेष्वपि । कर्णाकर्णिप्रयोगेण न्यसेद्रेखाचतुष्टयम् ॥ ५२ ॥
tataścaturṣu kōṇēṣu kōṇarēkhānvitēṣvapi | karṇākarṇiprayōgēṇa nyasēdrēkhācatuṣṭayam || 52 ||
Translation
Then, in the four corner squares joined by the corner lines, he should lay down four lines by joining corner to corner.
Word by word
- tataḥ
- (tataḥ) then
- caturṣu
- in the four
- kōṇēṣu
- corner squares
- kōṇa
- corner
- rēkhā
- lines
- anvitēṣu
- (anviteṣu) joined by
- api
- also
- karṇākarṇi
- corner to corner
- prayōgēṇa
- by joining
- nyasēt
- he should lay
- catuṣṭayam
- four
Meaning
In each of the four quarters he draws its own diagonal, "karṇākarṇi", corner to corner. The commentary adds that two lines from west to east and two from north to south are also laid in those squares, so that the grid of sixteen squares appears.

Commentary
Hariharānanda Bhāratī’s Sanskrit commentary, translated
With "tataḥ" and the rest. After that, in all four squares joined by the corner lines, he should lay down four lines by the method of joining corner to corner (karṇākarṇi). By "api" it is meant that in the four squares joined by the corner lines he should lay two lines from west to east and two lines from north to south.