Its true. Where? Just based on the definition of interest as a charge for the use, forbearance or detention of money. If they don't have it, you can't charge interest on it. And you can cross-examine me on this and argue to we're both blue in the face, but it isn't going to change the fact that this is the prevailing belief in Texas.
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Only two things that money can't buy, that's true love & homegrown tomatoes