Brihat Parashara Hora Shastra
साधितायुः खगे स्वोच्चे स्वर्क्षे वा त्रिगुणं स्मृतम् । द्विगुणं स्वनवांशस्थे स्वद्रेष्काणे तथोत्तमे ॥ २१॥
Some scholars suggest further corrections for Ańśayu, viz. to increase threefold the contribution of a Grah in exaltation, or in own Bhava and double the contribution, if the contributor is in his own Navāńś, or in his own Dreshkan.
english translation
sAdhitAyuH khage svocce svarkSe vA triguNaM smRtam । dviguNaM svanavAMzasthe svadreSkANe tathottame ॥ 21॥
hk transliteration by Sanscript