Brihat Parashara Hora Shastra
योगः स्रृङ्गाटकं नाम लग्नात्मजतपःस्थितैः । अन्यस्थानात् त्रिकोणस्थैः सर्वैर्योगो हलाभिघः ॥ १०॥
All Grahas in Lagn, Putr and Dharm Bhava cause Shringatak Yog, while all Grahas in Dhan, Ari and Karm Bhava, or in Sahaj, Yuvati and Labh Bhava, or in Bandhu, Randhr and Vyaya Bhava cause Hal Yog.
english translation
yogaH srRGgATakaM nAma lagnAtmajatapaHsthitaiH । anyasthAnAt trikoNasthaiH sarvairyogo halAbhighaH ॥ 10॥
hk transliteration by Sanscript