Hora Sara
होरेश्वरांशकसमानि ददाति लग्नं लग्ने शुभे बलयुते चतुरंशयुक्तम्। पापान्वितेऽपि विबले चतुरंशदनिं होरादशा तु विधिना परिकल्पिता स्यात्॥१२॥
The Lagna contributes as many years as the number of the Navamsa (counted from Mesha) progressed by the lord of the Lagna. When the Lagna. is strong and is occupied by a strong benefic, the years should be increased by ¼th of the Ayus obtained. The Ayus should be quadrupled when the lord of the Lagna is conjoined with benefics or friends. When the Lagna is weak or conjoined with malefics, a fourth of the Ayus should be deducted. Thus should the Dasa of the Lagna be calculated.
english translation
horezvarAMzakasamAni dadAti lagnaM lagne zubhe balayute caturaMzayuktam। pApAnvite'pi vibale caturaMzadaniM horAdazA tu vidhinA parikalpitA syAt॥12॥
hk transliteration by Sanscript