They bite the ear of someone and the head of another helpless person rolls.

अहो खलभुजङ्गस्य विपरीतो वधक्रमः

कर्णं लगति चैकस्य प्राणैरन्यो वियुज्यते

aho khala bhjangasy vipareeto vadhakramaH |

karnam lagati chaikasy pranairnyo viyujayate|

from Panchatanatram

Indeed the method used by the evil persons who are as venomous as snakes, when they want to kill someone is quite strange..

They bite the ear of someone and the head of another helpless person rolls.

Here the celebrated teacher Vishnu Sharma is describing the trick employed by evil fellows in their bid to cause death and destruction to innocent and weak people.

They manage it by carrying tales with the arrogant and strong persons..

If they do not like a poor fellow and want him to be eliminated, they will approach a someone much stronger than the victim and after gaining his confidence would poison his ears with stories which will flare up their enmity for the other

There is nothing stronger than a poisonous tongue and the work of disposing of the poor fellow is very easy..

Here the poet shows a great difference between a venomous snake and a venomous fellow..

The snake call kill a person only by biting the victim.. The poisonous fellow can kill someone by singing a song in the ears of another person..

Who is more dangerous?