Brihat Parashara Hora Shastra
द्वावेव सग्रहौ तौ चेत् बली तत्राधिकग्रहः । ग्रहयोगसमानत्वे ज्ञेयं राशिबलाद् बलम् ॥ १६२॥
If both Rāśis are occupied by an equal number of Grahas, the strength of the Rāśi itself should be taken into account. The principle for considering the Bal of the Rāśi is, that the Fixed Rāśi is considered stronger than the Movable one and the Dual Rāśi is considered more powerful than the Fixed Rāśi.
english translation
dvAveva sagrahau tau cet balI tatrAdhikagrahaH । grahayogasamAnatve jJeyaM rAzibalAd balam ॥ 162॥
hk transliteration by Sanscript