Brihat Parashara Hora Shastra
यद्भावेशयुतौ वापि यद्यद्भावसमागतौ । तत्तत्फलानि प्रबलौ प्रदिशेतां तमोप्रहौ ॥ १६॥
Rahu and Ketu. Rahu and Ketu give predominantly the effects, as due to their yuti with a Bhava Lord, or, as due to the Bhava they occupy.
english translation
yadbhAvezayutau vApi yadyadbhAvasamAgatau । tattatphalAni prabalau pradizetAM tamoprahau ॥ 16॥
hk transliteration by Sanscript