A proverb warning that over-praising someone can lead to complacency and ruined quality.
If the palm tapper is praised he dilutes the wine with water
Mgema akisifiwa tembo hulitia maji
"Usimsifu kupita kiasi kwani mgema akisifiwa tembo hulitia maji."
Translation: Do not overpraise him because if the tapper is praised he waters down the wine.