2. He said: Abul Qasim Ja’far ibn Muhammad ibn Qawlawayh, may Allah bless him with mercy, reported to me from al-Husayn ibn Muhammad ibn Amir, from al-Qasim ibn Muhammad al-Ishfahani, from Sulaiman ibn Dawood al-Minqari, from Hammad ibn Isa, who reported that: Abu Abdillah Ja’far ibn Muhammad, peace be upon him, said: Among the admonitions given by Luqman to his son, he said: "O son, in your days, night and hours, keep some portion for acquiring knowledge. Surely, you will not find any thing more wasteful than its disregard."