Brihat Parashara Hora Shastra
चेद् भवन्ति तदा ज्ञेया गजडास्ते यथाक्रमात् । यत्र स्वरे स्वनामाद्यवर्णः स्यात् तत्स्वरादयः ॥ १९३॥
In this manner the Swar, under which the first Varna of the name of the native is found, will determine the order of the Dashas of the five Swaras.
english translation
ced bhavanti tadA jJeyA gajaDAste yathAkramAt । yatra svare svanAmAdyavarNaH syAt tatsvarAdayaH ॥ 193॥
hk transliteration by Sanscript