What is the basis for sitting in the middle of the serve and sitting at the end of the serve, snapping your fingers and not snapping your fingers? Should we snap our fingers?

The Beginning has eleven paragraphs, which are different sermon systems. So we see someone pointing, someone insisting after pointing, someone drawing a circle after pointing, and so on. These are small things. This is a sacred act. According to the textual research on the narrator of Hadith, it is considered that pointing and then letting go is the strongest narrative chain. So this is also the proposition of our great imam.