Manasara 6.50

6.50

varuṇādvāyuparyantaṃ saumyādervāyurvāntakam
saumyādīśānaparyantaṃ sūtramevaṃ parivrajet

from Varuṇa (west) to Vāyu (north-west), and from Saumya (north) to Vāyu or Antaka; / from Saumya to Īśāna, thus the cord should proceed;