He who is used to strangle, cannot slaughter.
More Swahili Proverbs:
A sinking vessel needs no navigation.Swahili
An artful bird can be trapped in a rotten cage.
Swahili
Do not wake one who is sleeping; you will fall asleep yourself.
Swahili
He wanders around by day a lot, learns a lot.
Swahili
A traveller does not make a mess where he had made a camp as he might one day come back.
Swahili
An old man always keeps something in reserve.
Swahili