Imam Ali Naqi (a.s.) narrates that once Ameerul
Momeneen (a.s.) along with Janab-e-Salman (r.a.)
and Imam Hasan (a.s.) came to Masjidul Haramand sat there. There a very well-mannered and
well-dressed person came to them and said to
Ameerul Momeneen (a.s.) “I will ask you three
questions, if you answer them then I will
comprehend that how the nation has inflicted
losses on themselves by not choosing you as the
caliph and in reality they are not safe in this world
nor in the hereafter. But, if you are unable to reply
me, I will understand that there is no difference
between you and the people.” Ameerul Momeneen
(a.s.) said, “Ask whatever you desire… How does a
person remember a thing and how he forgets it?
(After listening to the questions), Ameerul
Momeneen (a.s.) turned towards Imam Hasan
(a.s.) and said, “O Abu Mohammad reply to his
questions. Imam Hasan (a.s.) started replying to
the man… the heart of a man is in a container
which has a lid, if a person recites complete
salawaat on Mohammad (s.a.w.a.) and his
progeny, the lid of the container opens and he
remembers whatever he has forgotten…. after
listening to the reply, the man said “There is no
God except Allah. Then he gave witness about
prophethood of Holy Prophet (s.a.w.a.) and the
caliphate of twelve Imams (a.s.) after him. Then he
said, “O Ameerul Momeneen accept my salutation
and may Allah bestow His choicest bounties on
you.” And then he left. Ameerul Momeneen (a.s.)
turned towards Imam Hasan (a.s.) and said, “O
Abu Mohammad, see where the man has gone.”
Imam Hasan (a.s.) went out to search him and
returned and said that man was not present in the
Masjid and he is not to be seen. Ameerul
Momeneen (a.s.) asked Imam Hasan (a.s.) whether
he recognized the man? Imam Hasan (a.s.) replied,
“Allah and His Messenger and Ameerul
Momeneen (a.s.) knows the best.” Imam (a.s.)
replied, “He was Hazrat Khizr (a.s.)”
Ref : Fazila e Salawaat