The famous Sufi master Rumi, who is very well known to most of you, has a story in which he talks of a man who goes to the house of a friend, and he knocks on the door, and a voice answers, "Who's there?"
El famós mestre Sufí Rumi, molt conegut per la major part de vosaltres, té una història en la què parla d'un home que va a casa d'un amic i pica a la porta, i una veu respon: "Qui és?"