Brihat Parashara Hora Shastra
पूर्णदृष्टे पूर्नयोगमर्धदृष्टेऽर्धमेव च । पाददृष्टे पादयोगमिति ज्ञेयं क्रमात् फलम् ॥ १४॥
Accordingly, if the Drishti is full, half, or one fourth, results will be in order full, medium and negligible.
english translation
pUrNadRSTe pUrnayogamardhadRSTe'rdhameva ca । pAdadRSTe pAdayogamiti jJeyaM kramAt phalam ॥ 14॥
hk transliteration by Sanscript