Kitāb al-Ghayba

Hadith 417
imam-mahdioccultation
قال حنظلة: فدعوت بأبي الفرج المظفر بن أحمد حتى سمع معي (منه) هذا الخبر.
Hanzala, the narrator of this report says: I called Abul Faraj Muzaffar bin Ahmad and he also heard this story with me.
Source: Shaykh Muḥammad b. al-Ḥasan al-Ṭūsī