الكافي- ط الاسلامية, volume 1, page 321

7. Ahmad has narrated from Muhammad ibn Ali from ibn Qiyama al-Wasiti who has said the following. “Once I went to see Ali ibn Musa (a.s.). (During the meeting) I asked him, “Can there be two Imams?” He replied, “No, but that one of them must remain silent.” I then said to him, “This applies to you. You are the Imam and there is no silent Imam with you.” At that time his son abu Ja‘far was not yet born. He said to me, “By Allah, Allah will make an Imam from me to establish the truth and the people of truth and banish falsehood and the people of falsehood. One year thereafter abu Ja‘far (a.s.) was born. Ibn Qiyama belonged to the Waqifi sect.”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

8. Ahmad has narrated from Muhammad ibn Ali From al-Hassan ibn al-Jahm who has said the following. “Once I was in the presence of abu al-Hassan (a.s.). He called his son who was a small (boy). The Imams (a.s.) placed him in my lap and said to me. “ Move his shirt aside.” When I did so. The Imams (a.s.) said, “Look in between his shoulders.” I look and I found in the skin of one shoulder something like an imprint of a seal.” The Imams (a.s.) then asked, “Do you see this.? Similar to this there was one in the shoulder of my father.”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

9. It is narrated from him (Ahmad ibn Mihran) from Muhammad ibn Ali from abu Yahya al-San‘ani who has said the following. “Once I was in of abu al-Hassan al-Rida (a.s.) Someone brought his son, Ja’far (a.s.) to him and he was a small (child). The Imams (a.s.) said, “This new born is one the like of whom with such great holiness and blessing has not been born for our Shi‘a (followers).”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

10. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Safwan ibn Yahya who has said the following. “Once I said to al-Rida (a.s.), before Allah’s granting you the blessing of the birth of abu Ja’far (a.s.) we would ask you and you would say, “Allah will grant me a son and He has granted you one. His birth is the delight of our eyes. May Allah spare us from showing your (sad) day. However, if something will happen to who then (will leadership with Divine Authority) will go?” The Imam (a.s.) pointed out with his hand towards abu Ja’far (a.s.) and he was standing before him. I then asked, “ May Allah take my soul in service for your cause, a child of three years?” The Imam (a.s.) said, “That will be of no harm to him. Jesus rose with Divine authority when he was a three years old child.”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.

11. Al-Husayn ibn Muhammad has narrated from Mu‘alla ibn Muhammad from Muhammad ibn Jumhur from Mu‘mmar ibn Khallad who has said the following. “I heard ’Isma‘il ibn Ibrahim say to al-rida (a.s.), ‘My son feels heaviness in his tongue. I intend to sent him tomorrow to you. Pass you your hand over his head and pray for him. He is your Mawla (slave).’” The Imam (a.s.) said, “He is a Mawla (slave) of abu Ja’far (a.s.). send him tomorrow to him (abu Ja‘far (a.s.).”

Translation: Muhammad Sarwar·Thaqalayn link·The Arabic above is the original.