Brihat Parashara Hora Shastra
बलसाम्ये द्वयोर्योगदलमायुः प्रकीर्तितम् । त्रयाणां त्रियुतेस्त्र्यंशसमं ज्ञेयं द्विजोत्तम ॥ ३२॥
Doubtful Cases. If two among Lagn, Sūrya and Candr gain equal strength, then longevity should be worked out, as per both systems and the average of both should be considered. If all the three are equally strong, the average of the three should be considered.
english translation
balasAmye dvayoryogadalamAyuH prakIrtitam । trayANAM triyutestryaMzasamaM jJeyaM dvijottama ॥ 32॥
hk transliteration by Sanscript