Surya Siddhanta
न छेद्यकम् ऋते यस्माद् भेदा ग्रहणयोः स्फुटाः । ज्ञायन्ते तत् प्रवक्ष्यामि छेद्यकज्ञानम् उत्तमम्॥
Since the phases of the lunar and solar Eclipses cannot be exactly understood without their projection, I therefore explain the excellent knowledge of the projection.
english translation
na chedyakam Rte yasmAd bhedA grahaNayoH sphuTAH । jJAyante tat pravakSyAmi chedyakajJAnam uttamam॥
hk transliteration by Sanscript