Brihat Parashara Hora Shastra
लग्नात् सप्तमगैनौ का कूटस्तुर्याच्च सप्तमैः । छत्राख्यः सप्तमादेवं चापं मध्याद् भसप्तगैः ॥ १४॥
Nauka, Koot, Chatr and Chap Yogas. If all the Grahas occupy the seven Bhavas from Lagn, Nauka Yog occurs, if from Bandhu, Koot Yog is formed, if from Yuvati, Chatr Yog occurs and, if from Karm, Chap Yog occurs. Here again the Grahas should occupy seven continuous Bhavas.
english translation
lagnAt saptamagainau kA kUTasturyAcca saptamaiH । chatrAkhyaH saptamAdevaM cApaM madhyAd bhasaptagaiH ॥ 14॥
hk transliteration by Sanscript