I recently found this band that plays Jewish folk songs or uses motives from them in their own material. They're called Black Ox Orkestrar. One of their songs called "Tsvey Tabelakh" seemed very familiar to me and it turns out, it's very similar to Led Zeppelin's "Kashmir". The harmony is the same and both repeat similar melody variations on top of it played in what seems to be the same scale (some typical Jewish folk music scale - I'm not able to identify it, I'm not really good in music theory) and at the end of Kashmir they even play almost exactly the same melody as in Tsvey Tabelakh.
Obviously, I'm not accusing Led Zeppelin of plagiarism. BOO's song was released long after LZ's one, but it's probably based on some Jewish folk song, that's way older than both BOO and LZ. So my question is: Is there any official information on the origin of LZ's "Kashmir"? Is it possible that they were inspired by some Jewish folk song?