Persian or Sudanese dagger

[Peter B.]

Originally Posted by Jim McDougall

This Zulfiqar, or bifurcated blade, indicates this was probably a votive weapon to one of the Holy men.

I want to point out that it looks like the center gap and the waves at the edges of the blade were added when the writing was already in place.
Is this in any way related to the assumption made above?
Or would it also be possible that these features were only added to a "normal" dagger afterwards in order to make it more interesting for sale?