Questions & Answers about Ko dai makomar tafki ce ko kuma faɗuwar ruwa.
It is an either ... or ... pattern.
- ko dai introduces the first possibility
- ko kuma introduces the second possibility
So the sentence is presenting two alternatives and saying the thing in question is one or the other.
Yes, Hausa can use ko by itself for or, but this fuller pattern sounds more balanced and explicit.
- ko = or
- ko dai = roughly either
- ko kuma = or alternatively / or else
So this is not random repetition. It is a common way to set up two clear alternatives.
dai is a very common particle in Hausa, and it often adds emphasis, limitation, or a discourse nuance rather than a neat one-word translation.
In ko dai, it helps create the sense of either.
You usually should not try to translate dai literally every time you see it. In many sentences, it is better understood as a particle that shapes the tone or force of the statement.