For a Sufi it is desirable to be conscious of every breath. In the schools of the Sufis in the East the members of a certain association take up as their duty to remind the whole assembly of the same. So one after another, in turn, takes it up as a duty. They call aloud "Hosh dar Dam," meaning "Keep conscious of the breath." "Nazar bar Qadam" -- this sentence is added when the Sufis are walking, and means, "Look down and see whose feet are these that are walking."