For example...
For example, there are the following traditions: It has been narrated from Hasan ibn Jahm that he was in the presence of Imam ‘Ali b. Musa al-Rida (ع). Imam Muhammad b. ‘Ali al-Taqi (ع), still a child, was also present. After a long conversation Imam ‘Ali b. Musa al-Rida (ع) said to me, “Hasan! If I tell you this child is to be your Imam, what would you say?” I said, “May I be your ransom! Whatever you say, I say the same thing.” The Imam (ع) said, “You speak the truth.” Then Imam ‘Ali b.
Musa al-Rida (ع) exposed the shoulder of Imam Muhammad b. ‘Ali al-Taqi (ع) and showed me a symbol that was similar to two fingers, and he said, “A comparable symbol was in the same place in the body of Imam Musa b. Ja’far al-Kazim (ع).”[^1] It has also been narrated from al-Mahmudi that he said, ‘I was in Tus (an area in Central Asia near present-day Mashhad) in the presence of Imam ‘Ali b. Musa al-Rida (ع).
One of his companions said, “If something were to happen to the Imam, who would be the divinely chosen Imam after him? The Imam (ع) turned to him and said, “Regarding the issue of Imamate, after me refer to my son Jawad (Imam Muhammad b. ‘Ali al-Taqi (ع)).” He (al-Mahmudi) said, “He is still a child!” Imam ‘Ali b. Musa al-Rida (ع) replied, “Allah chose ‘Isa (ع) as His messenger though he was younger than Imam Muhammad b. ‘Ali al-Taqi (ع).”[^2] In spite of these traditions some of Imam ‘Ali b.
Musa al-Rida’s (ع) followers out of anxiety still went in search of his successor. “Some of them went after ‘Abdullah ibn Musa, the brother of the eighth Imam (ع). Since they weren’t willing to accept anyone’s Imamate without evidence, they presented to him some questions, and when they found him unable to answer they forsook him.” This is because what was important to them was the manifestation of this divine aspect in the Imams’ knowledge.
This is also why they would apply this principle to all the Imams and subject them to various questions, and only when they felt that they were able to answer them (along with the textual declarations of their Imamate) would the Imami Shi’as recognize them as infallible Imams. The young Imams were no exceptions to this rule; the leaders of the Shi’as would examine them to become certain of their level of knowledge and ability to perform clear miracles.
On the other hand, the enemies of the Imams, who were always waiting for an opportunity to marginalize the Imams and disperse the Shi’as from around them, did not sit by idly.