Brihat Jataka
त्रिदशत्रिकोणचतुरस्त्रसप्तमान्यवलोकयन्ति चरणाभिवृद्धित: ॥ रविजामरेज्यरुधिरा: परे च ये क्रमशो भवन्ति किल वीक्षणेऽधिका: ॥ २-१३ ॥
A planet aspects ie throws its influence on the 3rd and lOth place with 1/4th of its total aspect. It aspects the place 5th and 9th from it with half of its aspect, it influences the place 4th and 8th from it with 3/4th of its power of aspect. AlI planets fully aspect the place 7th from where they are located. ln addition Saturn fully aspects the 3rd and lOth from it, Jupiter fully aspects the place 5th and 9th from it and Mars fully aspects the places 4th and 8th from it.
english translation
tridazatrikoNacaturastrasaptamAnyavalokayanti caraNAbhivRddhita: ॥ ravijAmarejyarudhirA: pare ca ye kramazo bhavanti kila vIkSaNe'dhikA: ॥ 2-13 ॥
hk transliteration by Sanscript