unknown possible weapon or ritual item?

[mavi1970]

I bought this on a whim, but now after receiving it and seeing the item, cant figure out what it is? Aside from the clover shaped blade, and islamic writing on both side, the leather sheath and hanging ring, the handle is of ivory with islamic writing and design on both sides. Initially one would think it is a ritual knife for possible sacrificial offerings, but i really dont know now.
Any help? anyone see anything like this before.???