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

Hadith n. 104
It is related by Nawf al-Bikali that: I saw that one night Amir al-mu’minin, peace be upon him, came out from his bed and looked at the stars, then he said to me: “O Nawf, are you awake or sleeping?” I said: “I am awake, O Amir al-mu’minin.” Then he said:

O Nawf! Blessed be those who abstain from this world and are eager for the next world. They are the people who regard this earth as a floor; its dust as their bed-cloth; and its water as their perfume; they recite the Qur’an in low tones and supplicate in high tones and then they are cut off from the world like ‘Isa (Jesus).

O Nawf! The prophet Dawud (David), peace be upon him, rose up at a similar hour one night and said, “This is the hour when whatever a person prays for is granted to him unless he is a tax-collector, an intelligence man, a police officer, a lute player or a drummer.”

As-Sayyid ar-Radi says: It is also said that “’artabah” means “tabl” (drum) and “kubah” means ‘lute’.

Hadith n. 105
Amir al-mu’minin, peace be upon him, said: Allah has placed on you some obligations which you should not ignore, laid down for you limits which you should not transgress and prohibited you from certain things which you should not violate. He has kept silent about certain things but has not left them out through forgetfulness, so do not burden yourself with them.

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