Dawud bin Sarhan, from JAAFAR BIN MOHAMMAD (ASWS), who said to him:
Convey my Salaam to my followers and tell them that I said:
May ALLAH (SWT) have mercy on any two slaves who meet and mention our affairs. When any two slaves mention our affairs, the third person in their gathering will be an angel who seeks forgiveness for them.
When you meet, mention us in your gatherings and keep our affairs Alive. The best of people after us are those who mention our affairs and invite others toward us.
(Ref : Amaali of Tousi 1:228)