«خُدْهَا فِي كُمَّكْ لَتْغُمَّكْ»

The saying never names what "it" is; the image is of a worshipper who removes his heavy slipper at a mosque doorway, as custom requires. Rather than leave it among the other shoes, where a thief might take it, he tucks it into his wide sleeve.

As a saying, it urges prudence: protect what belongs to you instead of trusting luck. A small effort at precaution now spares the regret and annoyance that follow a careless loss.

Say it to someone about to leave something valuable unattended or trust it to chance, especially in a crowded place. It works as a friendly prompt to keep one's belongings close rather than as a rebuke.