He who digs a pit will fall into it himself.
More Swahili Proverbs:
Where there are plenty of trees there are no builders.Swahili
Gratitude of a donkey is a kick.
Swahili
The teeth of a dog do not lock together.
Swahili
A cat can never he made to lie on its back.
Swahili
A hen does not break her own eggs.
Swahili
You can not know the extent of water in a pond that you have never been to.
Swahili