Chakra And Sufism?
What I personally believe is that they didn’t steal concepts from Hinduism, but through meditation, they had certain experiences that are similar to what Vedanta philosophers have experienced. I think it’s because even in today’s world, mystics tend to have similar experiences about reality and many other things. Now, if you ask why, there are two possibilities: 1) they are telling the truth, or 2) they are being deceived.