Brihat Parashara Hora Shastra
ज्ञात्वैवं स्फुटसिद्धान्तं राश्यंशं गणयेद् बुधः । अनुपातेन वक्ष्यामि तदुपायमतः परम् ॥ ८७॥
According to this principle, we should be acquainted with the Padas of the Nakshatras. Now I shall tell you, how the calculations are made, according to the proportion of the Padas of a Nakshatr.
english translation
jJAtvaivaM sphuTasiddhAntaM rAzyaMzaM gaNayed budhaH । anupAtena vakSyAmi tadupAyamataH param ॥ 87॥
hk transliteration by Sanscript