Masai walking stick spear?

[katana]

Hi,
sometime ago a bought an African walking stick and spearhead from the same source and was told they had always been together. I just assumed they were two seperate items from the same tribe/region. A few days ago I was going through my collection and whilst looking at the stick...had a flash of inspiration. The stick was sharply tapered at its end.......and fitted the socketted spearhead perfectly !!!

Now I do not know what it is I have no idea whether this was originally made like this, or combined like this later. If original could this be used ritualistically for 'blood letting' of cattle, symbolic staff....although this could be used as a 'short stabbing' spear,...I do not think this was its intended use.
The carving is very comfortable as a handle...when holding this as a stabbing spear.

Overall length approx. 125cms

Has anyone any ideas