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

Hadith n. 126
Amir al-mu’minin, peace be upon him, said: I wonder at the miser who is speeding towards the very destitution from which he wants to run away and misses the very ease of life which he covets. Consequently, he passes his life in this world like the destitute, but will have to render an account in the next world like the rich.

I wonder at the proud man who was just a drop of semen the other day and will turn into a corpse tomorrow. I wonder at the man who doubts Allah although he sees His creations. I wonder at him who has forgotten death although he sees people dying. I wonder at him who denies the second life although he has seen the first life. I wonder at him who inhabits this transient abode but ignores the everlasting abode.

Hadith n. 127
Amir al-mu’minin, peace be upon him, said: Whoever falls short of actions falls into grief, and Allah has nothing to do with him who spares nothing from his wealth in the name of Allah

Hadith n. 128
Amir al-mu’minin, peace be upon him, said: Guard against cold in its (seasonal) beginning and welcome it towards its end because it effects bodies in the same way as it effects plants. In the beginning, it destroys them but in the end it gives them fresh leaves.

Hadith n. 129
Amir al-mu’minin, peace be upon him, said: Greatness of the Creator appreciated by you would belittle the creatures in your view.

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