Surya Siddhanta
तयोर् मार्गोन्मुखीम् दद्याद् ग्रासतः प्राग्ग्रहाश्रिताम् । विमुञ्चतो मोक्षदिशि ग्राहकाध्वानम् एव सा॥
Lay it off toward the path upon either side—when the time is before that of greatest obscuration, toward the side of contact; when the obscuration is decreasing, in the direction of separation—and where the stick and the path of the eclipsing body.
english translation
tayor mArgonmukhIm dadyAd grAsataH prAggrahAzritAm । vimuJcato mokSadizi grAhakAdhvAnam eva sA॥
hk transliteration by Sanscript