Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Dashas, Yogas, Placements
जातकम् २
तन्वस्तगैश्च सकटं विहगो राज्यबंधुगैः ।शृङ्गाटकं धिगौगस्थैर्लग्नान्यस्थैर्हलं मतम् ॥ १८७ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 55, verse 187.
With planets in the lagna (rising sign) and the 7th, the combination is Shakata. With the 10th and 4th, it is Vihaga. With the 5th, 9th and the lagna, it is Shringataka. With such a triangle counted from another house, it is called Hala.
Simple meaning: Planets in set houses form Shakata, Vihaga, Shringataka or Hala.
लग्नाच्चतुर्भुगैर्यूपः शरस्तूर्याच्चतुर्भुगैः ।
Planets in four houses in a row from the 1st, 4th, 7th or 10th make Yupa, Shara, Shakti or Danda.
लग्नात्क्रमात्सप्तभगैर्नौकाकूटस्तु नुर्यतः ।
Planets in seven houses in a row make Nauka, Koota, Chhatra, Chapa or Ardhachandra, by the starting house.
वीणादामपाशकेदारभूशूलयुगगोलकाः ।
Seven combinations are named. All planets in moving signs make Rajju.