Theft in spiritual terms

We understand theft as one person taking away another person's property by force or by cunning.

In Text 3.28.4 Kapila Muni instructs his mother :

SB 3.28.4 — One should practice nonviolence and truthfulness, should avoid thieving and be satisfied with possessing as much as he needs for his maintenance. He should abstain from sex life, perform austerity, be clean, study the Vedas and worship the supreme form of the Supreme Personality of Godhead.

In the purport Srila Prabhupada explains the word asteyam, theft as :
"The word asteyam is also very important for a yogī. Asteyam means “to refrain from theft.” In the broader sense, everyone who accumulates more than he needs is a thief. According to spiritual communism, one cannot possess more than he needs for his personal maintenance. That is the law of nature. Anyone who accumulates more money or more possessions than he needs is called a thief, and one who simply accumulates wealth without spending for sacrifice or for worship of the Personality of Godhead is a great thief."