Shaykh Abu Amr Al Hajooree mentions in Fiqhul Akbar 1/82:

Bishr Ibn Al Haarith said:

I don’t know an action upon the face of the earth more virtuous than seeking knowledge and Hadeeth for the one who fears Allah and his intention is good in regards to it.

Translated by

Majid Jawed Al-Afghanee
Abu Layl