Mchimba kisima huingia mwenyewe

Translation: 
A well-digger enters it by himself
Postproverbial: 
Mchimba kisima huepuka adha za EWURA
Translation: 
A well-digger avoids EWURA's troubles
Comments: 
EWURA is a water supply agency in Tanzania (Energy and Water Utilities Regulatory Authority).
Language - Region: 
kiswahili-east africa