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

Hadith n. 361

361. Amir al-mu’minin, peace be upon him, said: If you have a need from Allah, the Glorified, then begin by seeking Allah’s blessing on His Messenger, may Allah bless him and his descendants, then ask your need, because Allah is too generous to accept one (seeking His blessing on His Messenger) of the two requests made to Him and deny the other.

Hadith n. 362

362. Amir al-mu’minin, peace be upon him, said: He who is jealous of his esteem should keep from quarrelling.

Hadith n. 363

363. Amir a1-mu’minin, peace be upon him, said: To make haste before the proper time or to delay after a proper opportunity, in either case is folly.

Hadith n. 364

364. Amir al-mu’minin, peace be upon him, said: Do not ask about things which may not happen because you have enough to worry about with what happens.

Hadith n. 365

365. Amir al-mu’minin, peace be upon him, said: Imagination is a clear mirror, and the taking of lessons (from things around) provides warning and counsel. It is enough for improving yourself that you should avoid what you consider bad in others.

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