Brihat Samhita
नित्यं अधःस्थस्यैन्दोर्भाभिर्भानोः सितं भवत्यर्धम् । स्वच्छाययाअन्यदसितं कुम्भस्यैवऽतपस्थस्य ॥ ४-०१ ॥
The moon (candra) is always below (nearer to the Earth than) the sun. It is spherical in shape. One half of it is always illumined by the light of the sun, while the other half is dark owing to its own shadow, just like a pot placed in the sun.
english translation
nityaM adhaHsthasyaindorbhAbhirbhAnoH sitaM bhavatyardham । svacchAyayAanyadasitaM kumbhasyaiva'tapasthasya ॥ 4-01 ॥
hk transliteration by Sanscript