The Book of Occultation — al-Ṭūsī · Hadith 38 (#Ḥadīth #32)

وهذه حال ظهور الامام مع تمكيننا فيجب أن يكون عدم تمكيننا هو السبب في أن لم يظهر في هذه الأحوال لا عدمه، إذ كنا لو مكناه عليه السلام لوجد وظهر.

Same is the case of Imam’s appearance with regard to our duty of providing him help and power. Therefore, it is our lack of providing help and power that is the reason that he has not appeared in these conditions, not his lack of existence. Since if we had provided him help and power, he would have been created and would have appeared.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).