“Undertaking our matter is not by believing and accepting it only. Undertaking our matter is by preserving and keeping it secret from those, who are not qualified for it. Deliver my greeting to them (the Shia) and tell them that he (Imam as-Sadiq) says to you: May Allah have mercy upon one, who brings me and himself people’s love by telling them of what they know and concealing what they deny. By Allah, he, who makes war against us, is not more harmful to us than one, who accuses us of what we hate.”