Charak Samhita
शुद्धवैदूर्यविमला सुस्निग्धा चाम्भसी मता। स्थिरा स्निग्धा घना श्लक्ष्णा श्यामा श्वेता च पार्थिवी ॥१२॥
4. Mahabhuta: Jala mahabhuta; Distinctive characteristic features of shadows : Clear like cat’s eye, and excessive unctuous; 5. Mahabhuta: Prithvi mahabhuta; Distinctive characteristic features of shadows : Stable, unctuous, compact, smooth, black and white;
english translation
zuddhavaidUryavimalA susnigdhA cAmbhasI matA। sthirA snigdhA ghanA zlakSNA zyAmA zvetA ca pArthivI ॥12॥
hk transliteration by Sanscript