It is good keeping his clothes who is going to swim.

Understand the thought

Meaning in plain English

Protect what you will need afterward before taking an action that puts it at risk. Keeping clothes safe while swimming becomes an image of preparation and attention to foreseeable consequences.

What the words are saying

Someone about to enter the water still needs their clothes when they come out. The ordinary sequence gives the saying its practical force: enthusiasm for the next activity should not erase the needs that follow it. Read more broadly, the proverb encourages a small precaution before becoming occupied or vulnerable. It does not demand that every possible risk be eliminated or that a person refuse new experiences. The useful question is what can be preserved now with modest effort. Sensible preparation lets the activity proceed with fewer avoidable difficulties rather than turning caution into an obstacle to doing anything.

Everyday example

Before editing a shared document extensively, a writer saves a copy so the previous version remains available.

When to use it

Use it to encourage a proportionate precaution before acting.

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