Shiva Purana
मण्डलान्युत्तराशास्यः कुर्यात्स्वयमवस्थितः॥ प्रादेशमात्रं संकल्प्य चतुरस्रं च मध्यतः ॥ ३ ॥
The north-facing man should make the circles standing on his own. Determine only a region and a square in the middle.
english translation
maNDalAnyuttarAzAsyaH kuryAtsvayamavasthitaH॥ prAdezamAtraM saMkalpya caturasraM ca madhyataH ॥ 3 ॥
hk transliteration by Sanscript