If a person enters dar al-harb with a promise of safety, it is not permissible for him to betray them with regard to their lives or their wealth

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Check below answers in case you are looking for other related questions:
Stealing electricity from the state on the grounds that it does not give its citizens their rights
He used to steal money from his father and now he wants to return it without telling him

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Related Answers:
Taking more than one’s salary from a company in a kaafir land
Ruling on borrowing from one whose wealth is haraam
Where should he deposit his money in these times when riba is so widespread?
Stealing electricity from the state on the grounds that it does not give its citizens their rights
He used to steal money from his father and now he wants to return it without telling him

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