If you destroy a bridge, be sure you can swim.
More Swahili Proverbs:
The path of a liar is short.Swahili
The sick man is the garden of the physicians.
Swahili
There is no bad patience.
Swahili
Aiming isn't hitting.
Swahili
Haste does not result in prosperity.
Swahili
If the hours are long enough and the pay is short enough, someone will say it's women's work.
Swahili