Arthashastra
ततो दक्षिणं वामेन वामं दक्षिणेन समभ्यज्य रात्रौ तमसि च पश्यति ॥
Whoever anoints his own right eye with the powder of the left eye and his left eye with the powder of the right eye-ball can clearly see things even in pitch dark at night.
english translation
tato dakSiNaM vAmena vAmaM dakSiNena samabhyajya rAtrau tamasi ca pazyati ॥
hk transliteration by Sanscript