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

Hadith n. 115:
It was said to Amir al-mu’minin, peace be upon him: How are you, O Amir al-mu’minin? And he replied: How can he be whom life is driving towards death, whose state of healthiness can change into sickness any moment, and who is to be caught (by death) from his place of safety

Hadith n. 116:
Amir al-mu’minin, peace be upon him, said: There are many people who are given time (by Allah) through good treatment towards them, and many who are deceived because their sinful activities are veiled (by Allah), and many who are enamoured by good talk about themselves. And Allah does not try anyone as seriously as He tries him whom He allows time (to remain sinful).

Hadith n. 117:
Amir al-mu’minin, peace be upon him, said: Two categories of persons will face ruin on account of me: he who loves me with exaggeration, and he who hates me intensely.

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