Brihat Parashara Hora Shastra
विष्णुस्थानं च केन्द्रं स्याल्लक्ष्मीस्थानं त्रिकोणकम् । तदीशयोश्च सम्बन्धाद्राजयोगः पुरोदितः ॥ २८॥
Lords of Kendras and Konas Related. The Kendras are known, as Vishnu Sthanas (Bhavas of Lord Vishnu), while the Konas are called Lakshmi Sthanas. If the Lord of a Kendr establishes a relationship with the Lord of a Kon, a Raj Yog is obtained.
english translation
viSNusthAnaM ca kendraM syAllakSmIsthAnaM trikoNakam । tadIzayozca sambandhAdrAjayogaH puroditaH ॥ 28॥
hk transliteration by Sanscript