«حَاجَةْ مَا تْهِمَّكْ وَصِّي عَلِيهَا جُوزُ أُمَّكْ»

The proverb warns that a person with no personal attachment to you or your belongings is a poor guardian for anything you value. Its image draws on an old stereotype of a mother's husband as neglectful or self-serving toward her children from another marriage; the saying reflects that traditional view and does not show how real stepparents behave.

The saying also makes a broader point about choosing caretakers. Anything precious should go to someone who shares your interest in keeping it safe. An indifferent trustee may lose it through carelessness or quietly keep it, so trust should follow genuine concern rather than mere closeness or family position.

Use it as a wry warning against entrusting valuables or important tasks to someone with little reason to care for them. Its distrust of stepfathers reflects a traditional stereotype, so it may sound insulting when applied to real families.