Al-Imam Ali (p.b.u.h), said:

Hadith n. 478

478. Amir al-mu’minin, peace be upon him, said: Allah has not made it obligatory on the ignorant to learn till He has made it obligatory on the learned to teach.

Hadith n. 479

479. Amir al-mu’minin, peace be upon him, said: The worst comrade is he for whom formality has to be observed. 101

As-Sayyid ar-Radi says: This is because formality is inseparable from hardship and it is an evil that is caused by a comrade for whom formality is observed. Consequently, he is the worst of all comrades.

Hadith n. 480

480. Amir al-mu’minin, peace be upon him, said: If a believer enrages his brother, it means that he leaves him.

As-Sayyid ar-Radi says: It is said ‘‘hashamahu’’ or ‘‘ahshamahu’’ to mean ‘‘He enraged him’’. According to another view it means ‘‘He humiliated him’’. While ‘‘ihtashamahu’’ means ‘‘He sought these for him’’, and that is most likely to cause him to separate.

Source: https://www.al-islam.org/nahjul-balagha-part-2-letters-and-sayings