Astanga Hrudaya
आसन्ने लक्ष्यते चाया विकृष्टे भा प्रकाशते । नाच्चायो नाप्रभः कश्चिद्विशेषाश्चिह्नयन्ति तु ॥ ५२ ॥
Chaya is noticeable (understood) from near (close by) whereas prabha is noticeable even from a distance. Neither, chaya nor prabha indicate at any time the special features of man, that is his attaining good or bad (health or ill health).
english translation
Asanne lakSyate cAyA vikRSTe bhA prakAzate । nAccAyo nAprabhaH kazcidvizeSAzcihnayanti tu ॥ 52 ॥
hk transliteration by Sanscript