Muhammad Ibne Yahya and Ahmad Ibne Muhammad havenarrated from Muhammad Ibne Hasan from Ibrahim Ibne Hashim from Amr Ibne Uthman from Ibrahim Ibne Ayyub from Amr Ibne Shimr from Jabir from Abu Ja’far (a) who has said the following:
“Once when Amirul Momineen (a) was on the pulpit, a serpent entered from one of the doors of the Masjid. People wanted to kill him. Amirul Momineen (a) asked them to leave him alone. They left him alone. The serpent began to crawl to the pulpit. He stretched and saluted to Amirul Momineen (a).
Amirul Momineen (a) made a gesture to him to wait until the sermon is completed. When the sermon was completed he came to him and said, “Who are you?”He said, “I am Amr Ibne Uthman, your deputy among the Jinns. My father has died and he has asked me in his will to come to you and find out your instructions and that is why I am here. What do you command me to do and what do you see.
”Amirul Momineen (a) said, “I ask you to be pious before Allah and go back and act as the successor of your father among the Jinns. I appoint you as my deputy over them.”
The narrator has said that Amr then said farewell to Amirul Momineen (a) and left as his deputy over the Jinns.
I asked Imam Muhammad Baqir (a): May I be sacrificed on you, does Amr fulfill that obligation on him?
He said, “Yes, he does so.”
Al-Kafi, Vol. 1, Pg. 396; Basairud Darajaat, Pg. 97, Tr. 7; IthbatulHuda, Vol. 2, Pg. 404, Tr. 10.72