Brihat Parashara Hora Shastra
द्विस्वभावगृहे लग्ने लग्नेशाद् बलसंयुतात् । द्वौ पापौ यदि केन्द्रस्थौ दीर्घमायुस्तदा भवेत् ॥ ७०॥
Should Lagn be a Dual Rāśi, while two malefics are in a Kendr with reference to a strong Lagn‟s Lord, long life is indicated.
english translation
dvisvabhAvagRhe lagne lagnezAd balasaMyutAt । dvau pApau yadi kendrasthau dIrghamAyustadA bhavet ॥ 70॥
hk transliteration by Sanscript