Good question, I just did a little digging to see if I could find out. It sounds like old Arabic did indeed use little endian in writing and speaking, but modern Arabic does not. However, place values weren’t invented in Arabic, Wikipedia says that occurred in Mesopotamia, which spoke primarily Sumerian and was written in Cuneiform - where the direction was left to right.
https://en.wikipedia.org/wiki/Number#First_use_of_numbers
https://en.wikipedia.org/wiki/Mesopotamia
https://en.wikipedia.org/wiki/Cuneiform