Surya Siddhanta
अष्टाभिस् त्रिम्शता चैव विक्षिप्ताव् उत्तरेण तौ । गोलम् लब्ध्वा परीक्षेत विक्षेपम् ध्रुवकम् स्फुटम्॥
And they are removed in latitude (vikshipta), northward, eight and thirty degrees respectively. Having constructed a sphere, one may examine the corrected (sphuta) latitude and polar longitude (dhruvaka).
english translation
aSTAbhis trimzatA caiva vikSiptAv uttareNa tau । golam labdhvA parIkSeta vikSepam dhruvakam sphuTam॥
hk transliteration by Sanscript