He is very cunning, so their company is not good to keep. Even a mighty river is swept away by the ocean.

This couplet is a powerful warning about deceptive charisma. The poet suggests that certain people are so cunning and influential that even something as stable and mighty as a river can be diverted or overpowered by them. It speaks to the danger of associating with a truly manipulative or unpredictable soul, whose power can derail even the most predictable life path.