A. Hin Tzedek.
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Q. Why is it wrong for a person to say one thing but in his mind he has other plans ?
A. There is a lack of truth & it is a form of theft. See Rambam
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Q. What if someone mentioned to a friend I plan to give you a gift , but now he is reconsidering , is it permissible ?
A. It depends if it was a small amount & they were relying on it one should not retract.
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Q. If someone asks , can you watch my money & the response is - my house is available , does he become responsible ?
A. Not unless he adds , put it in front of me or I will watch it.
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Q. If a seller overcharghed or if a buyer underpaid what is the penalty ?
A. When it is the amount of a sixth they are obligated to pay back.
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