The Behavior of The Seeker of Knowledge

It is reported that ʿAlī – Allāh be pleased with him – said:

When you learn knowledge, preserve it, and do not mix it with laughter and falsehood, such that the hearts refuse (dislike) it.

Al-Khaṭīb Al-Baghdādī, Al-Jāmiʿ li-Akhlāq Al-Rāwī wa Ādāb Al-Sāmiʿ 1:232