Meaning of the word "nothing must be done hastily but killing of fleas" in English

What does "nothing must be done hastily but killing of fleas" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

nothing must be done hastily but killing of fleas

US /ˈnʌθ.ɪŋ mʌst bi dʌn ˈheɪ.stɪ.li bʌt ˈkɪl.ɪŋ ʌv fliːz/
UK /ˈnʌθ.ɪŋ mʌst bi dʌn ˈheɪ.stɪ.li bʌt ˈkɪl.ɪŋ ɒv fliːz/
"nothing must be done hastily but killing of fleas" picture

Idiom

a proverb suggesting that most tasks require care and patience, and only very simple or trivial things should be done in a hurry

Example:
Take your time with the contract; remember, nothing must be done hastily but killing of fleas.
I know you want to finish the house, but nothing must be done hastily but killing of fleas if you want it to last.