Spanish motto on takouba or kaskara blades?

[Oliver Pinchot]

Those involved in the inbound trade of these blades would be to some degree literate and have an understanding that these are white man’s words and thus perhaps be considered to have power over them and have no real place amongst the regions who received these blades.

Respectfully, I find this both muddled and incorrect.

The inscription, which no one has bothered to relate in English, means

Do not draw me without right, do not sheathe me without honor.

If translated, such a basic phrase would be understood by virtually any human culture, particularly a chivalric one like that
of the Tuareg. And if not, it would simply represent a series of interesting if unintelligible marks, which even the most ignorant seller would ask a higher price for.
Secondly, the Tuareg are Caucasoid. They are white men, Gavin.

Oliver