Just as it is impossible to know when a swimming fish is drinking water, so it is impossible to find out when a government servant is stealing money

Explanation

This highlights the difficulty in detecting corruption within government servants. It states that just as it is impossible to observe a fish drinking water while it is swimming, it is equally challenging to identify when a government servant is embezzling money. The teaching implies that corruption can be concealed and carried out discreetly, making it challenging to detect or uncover. It serves as a cautionary reminder of the need for vigilance and stringent measures to prevent and combat corruption within the government system.