Phaladeepika
एकत्र भावे बहवो यदानी- मुक्ताङ्कगाश्चारवशाद्व्रजन्ति । पुष्णन्ति तद्भावफलानि सम्यक् तत्कारकात्तत्तनृपूर्वभावे ॥ १५॥
When there are many planets simultaneously passing in their course of transit through a a certain Bhava containing also a good number of benefic dots in the Ashtakavarga of a planet, they promote the interests of the Bhava in an intense manner, i.e., produce good results for the Bhava represented by it, the counting being reckoned from the house occupied by the Karaka planet whose Ashtakavarga is under consideration.
english translation
ekatra bhAve bahavo yadAnI- muktAGkagAzcAravazAdvrajanti । puSNanti tadbhAvaphalAni samyak tatkArakAttattanRpUrvabhAve ॥ 15॥
hk transliteration by Sanscript