(3) Chapter: The Gravity of the Sin of Concealing Knowledge

3 — ʿAlī ibn Muhammad ibn Muhammad ibn Ahmad ibn ʿUthmān, the man of letters, narrated to us orally in Naysābūr: al-Asamm narrated to us: Ibrāhīm ibn Saʿd al-Basrī narrated to us: Idrīs ibn Yahyā ibn ʿAbbās narrated to us.

Hāʾ (transition to another chain): And Mansūr ibn al-Husayn ibn Muhammad, the Quran commentator, informed us in Naysābūr: al-Asamm narrated to us: Ibn ʿAbd al-Hakam informed us: Ibn Wahb narrated to us, saying: ʿAbd Allāh ibn ʿAyyāsh informed me, from his father, from Abū ʿAbd al-Rahmān al-Hubulī, from ʿAbd Allāh ibn ʿAmr, may Allah be pleased with him, that the Messenger of Allah, may Allah bless him and grant him peace, said:

“Whoever conceals knowledge, Allah Most High will bridle him with a bridle of fire.”