Brihat Parashara Hora Shastra
ग्रहवीर्यानुसारेण फलं ज्ञेयं दशासु च । आद्यद्रेष्काणगे खेटे दशारम्भे फलं वदेत् ॥ ३॥
The effects of the Dashas of the Grahas are in accordance with their strength. The effects of a Grah in the first Dreshkan are realized at the commencement of the Dasha.
english translation
grahavIryAnusAreNa phalaM jJeyaM dazAsu ca । AdyadreSkANage kheTe dazArambhe phalaM vadet ॥ 3॥
hk transliteration by Sanscript