The Book of Occultation — al-Ṭūsī · Hadith 679 (#Ḥadīth #5)

413- وبهذا الاسناد عن عبدالرحمن بن كثير قال: كنت عند أبي عبد الله عليه السلام إذ دخل عليه مهزم الاسدي فقال: أخبرني، جعلت فداك،متى هذا الامر الذي تنتظرونه؟ فقد طال. فقال: يا مهزم،كذب الوقاتون، وهلك المستعجلون، ونجا المسلمون، وإلينا يصيرون.

H 413 - It is narrated from the same chains from Abdur Rahman bin Kathir that he said: I was with Imam Ja’far Sadiq when Muhzim Asadi entered and asked: May I be sacrificed on you, please tell me when the reappearance is? It has been delayed too much.” Abu Abdullah said: “O Muhzim, the ill-wishers have told lies, the hasteners will perish and the believers will be saved and will be with us.”

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