It is necessary for him to have one of them, and it may be that one or all of them accumulate or gather the knowledge of the group and additional information, but what is specific to each one of them is what we mentioned in terms of number, so it is a condition of it, and neither he nor any of them may have additional knowledge, neither from what his companions have nor from what they do not have, so it is among them. He who has the face, which is what God Almighty says about Satan. Then I will certainly come to them from before them and from behind them and from their right and from their left. And for each side there is a stake that will intercede on the Day of Resurrection for whomever Satan enters from his side. So he who has the face has sciences of encounter, ecstasy, longing, love, obscure issues, the science of theory, the science of mathematics, and the science of nature. The divine knowledge, the knowledge of balance, the science of lights, the science of divine manifest