“Ọmọ tí a kò kọ́, ní yóò gbe ilé tí a kọ́ tán.”

“Ọmọ tí a kò kọ́, ní yóò gbe ilé tí a kọ́ tán.”
The child you fail to train will sell the house you built.
Meaning: Proper upbringing is essential for the future.