Arthashastra
अयस् कान्तो वा पाषाणः कुलीर दर्दुर खार कीट वसा प्रदेहेन द्वि गुणः ॥
The sun-stone (ayaskánta) or any other stone (will break to pieces) when wetted with the serum of the flesh of the animals kulinda (?), dardura (?), and khárakíta (?)
english translation
ayas kAnto vA pASANaH kulIra dardura khAra kITa vasA pradehena dvi guNaH ॥
hk transliteration by Sanscript