This is not an error of duplication. The full-fledged version of this Mitzvah are many and change for those who are learning the one/three chapter a day. The Message for the day from "Bringing Heaven Down to Earth" at the end of this Mitzvah is different than that of yesterday.

Positive Mitzvah 245: Conducting Business
Leviticus 25:14 "And if you sell something to your neighbor, or buy something from your neighbor"

The Torah deals with every aspect of our lives; not only with the way we pray and study, but also the manner in which we carry out our business.

This Positive Mitzvah establishes guidelines for our business dealings and governs the way we buy, sell, and transfer ownership of property.

These guidelines include writing business contracts, paying for goods with money, or exchanging one item for another.

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They translate it as "The Bible", or "The Law", but that's not what the word means. Torah means "instructions". Whatever piece of Torah you learn, you must find the instructions it is giving you.

From: Bringing Heaven Down to Earth by Tzvi Freeman - tzvif@aol.com