“One day abu ‘Abdallah (a.s.) addressed me with a surname, “O abu ‘Abdallah, –he would address me this way before- and I responded, “Yes, O Imam, here I am.” He said, “Every Friday night it’s a time of happiness for us.” I said, “May Allah increase such a happiness for you. Of what nature is this happiness?” The Imam (a.s.) said, “When Friday night comes the Messenger of Allah arrives to the throne of Allah and the Imams (the leaders who has said the following. possess Divine authority) also arrive there with him and we also arrive with them. Our souls are returned back to our bodies only after receiving very new useful knowledge without which we would already be left without of knowledge.”