Dervish literally means poor and needy. In mystical path, it refers to someone who does not need anything except the God.

a dervish is not a beggar, but is perfection achievement, and the result of which is freedom of dependency of the world and its effects; and finally, reaching the status of annihilation and separation from anything other than the God, connection with the God, and the stage of survival of the God.

In the first book of Masnavi, Rumi said about worldliness:

“What is the world? anything that distracts you and loses your focus on God, not just stuff, money, and lust."

He also said about dervishes:

The affair of (spiritual) poverty is beyond thy apprehension:

Do not look on poverty with contempt,

Because dervishes are beyond property and wealth:

They possess an abundant portion from the Almighty.

Bayazid Bastami was asked who dervish was. He said:

“One who reaches a treasure in the corner of his heart and finds a gem in that treasure which is called love. Whoever finds that gem, is a dervish.”