Meaning of the word "a fool knows more in his own house than a wise man in another" in English

What does "a fool knows more in his own house than a wise man in another" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a fool knows more in his own house than a wise man in another

US /ə fuːl noʊz mɔːr ɪn hɪz oʊn haʊs ðæn ə waɪz mæn ɪn əˈnʌðər/
UK /ə fuːl nəʊz mɔːr ɪn hɪz əʊn haʊs ðæn ə waɪz mæn ɪn əˈnʌðə/
"a fool knows more in his own house than a wise man in another" picture

Idiom

a person understands their own affairs or local situation better than an outsider does, regardless of the outsider's general wisdom

Example:
I know you're an expert, but let me handle the local negotiations; a fool knows more in his own house than a wise man in another.
Don't try to tell him how to run his farm; a fool knows more in his own house than a wise man in another.