No boogieman about it, there's many books on their conversion, very old books as well.

The Arabs wrote a lot about them so did the byzantines even Sephardic Jews in Spain that wanted to know about the new converts

Here's one that pieces all the older sources

https://b-ok.cc/book/3239360/6e50e6

No boogieman about it, there's many books on their conversion, very old books as well.

The Arabs wrote a lot about them so did the byzantines even Sephardic Jews in Spain that wanted to know about the new converts