Brihat Jataka
स्वर्क्षतुङ्गमूलत्रिकोणगा: कण्टकेषु यावन्त आश्रिता: ॥ सर्व एव तेऽन्योन्यकारका: कर्मगस्तु तेषां विर्शेषत: ॥ २२-१ ॥
As many as those situated in the angles (1st, 4th, 7th, and 10th houses) in one’s own zodiac sign, exaltation, or mulatrikona; indeed, all those are mutual karakas, especially of those situated in the 10th house.
english translation
svarkSatuGgamUlatrikoNagA: kaNTakeSu yAvanta AzritA: ॥ sarva eva te'nyonyakArakA: karmagastu teSAM virzeSata: ॥ 22-1 ॥
hk transliteration by Sanscript