Arthashastra
सर्प निर्मोकं गो अश्व पुरीषम् अन्ध अहिक शिरश् च अन्धी करो धूमः ॥
The smoke caused by burning the skin of a snake, the dung of a cow and a horse, and the head of a blind snake causes blindness.
english translation
sarpa nirmokaM go azva purISam andha ahika ziraz ca andhI karo dhUmaH ॥
hk transliteration by Sanscript