Kitāb al-Ghayba

Hadith 92
occultationimam-kazimahl-al-baytimam-mahdi
32- قال: وبهذا الإسناد،قال: تذاكرنا عنده القائم فقال: اسمه اسم لحديدة الحلاق.
H 32 - Through the same chains, Abu Khalid Kabuli said: The topic of Imam Qaim (a.s) was mentioned before Imam Zainul Abideen (a.s). Imam (a.s) said: His name is the name of the scalpel [Musa].
Source: Shaykh Muḥammad b. al-Ḥasan al-Ṭūsī