15. hadíth
[7/15] الكافي: قال رسول الله صلى الله عليه وآله: طلب العلم فريضة على كل مسلم
7. [7/15] al-Kafi: The messenger of Allāh صلى الله عليه وآله said: seeking knowledge is compulsory on every Muslim.
Muʿjam al-Aḥādīth al-Muʿtabara
Shaykh Muḥammad Āṣif al-Muḥsinī
Book of Intellect and Knowledge
Merit of Knowledge and the Scholar and the Obligation of Knowledge
A fordítás angol nyelvű (Ammaar Muslim), forrás: Thaqalayn.net.