The kusti is a cord of seventy-two threads worn wound three times around the waist over the sudreh shirt, and it is untied and retied with prayer several times daily — a small, frequent, physical act of realignment. The three windings are the ethical triad: good thoughts, good words, good deeds. Investiture with it (navjote) is the initiation ceremony that makes a child a Zoroastrian, usually between seven and eleven.