Phaladeepika
कोणाधीशः केन्द्रगः केन्द्रपो वा कोणस्थश्चेद् द्वौ च योगप्रदौ स्तः । द्वावप्येतौ भुक्तिकाले दशाया- मन्योन्यं तौ योगदौ सोपकारौ ॥ ४२॥
The lord of a Trikona house (5 th and 9 th) posited in a Kendra or the lord of a Kendra in a Trikona house will prove auspicious to the native. These two planets during their Bhuktis in each other's Dasas will help each the other and thus co-operate to make the period auspicious.
english translation
koNAdhIzaH kendragaH kendrapo vA koNasthazced dvau ca yogapradau staH । dvAvapyetau bhuktikAle dazAyA- manyonyaM tau yogadau sopakArau ॥ 42॥
hk transliteration by Sanscript