He who digs too deep for a fish may come out with a serpent.

Understand the thought

Meaning in plain English

Digging too deeply for a fish and finding a serpent pictures pursuit uncovering an unwanted result. The saying warns that extending an action can change what it brings back.

What the words are saying

The precise traditional scene is unverified and provides no fishing, digging or animal encounter procedure. A qualified application can examine scope and consequences without discouraging necessary inquiry. More investigation can also clarify a problem; the image does not establish that going further is always harmful.

Everyday example

Someone reviews whether expanding a task still serves its purpose instead of assuming more effort is automatically better.

When to use it

Use it only as a qualified scope-and-consequence image.

Agent-assisted editorial interpretation. This explains the words; it does not by itself verify their author or earliest origin.