Covers the laws of vows and oaths: staying away from them, and which vows are valid or invalid. Also covers a vow to improve one's character, and resolving to study or do a mitzvah without a vow.

Learning Halacha in a year with Rabbi Trump through the prism of the Kitzur Shulchan Aruch.

Covers the iska, the business arrangement in which one party invests and the other trades, sharing profits and losses. Explains the conditions that can be set and includes a sample iska contract.

Learning the Kitzur Shulchan Aruch, one day at a time.

Covers the prohibition of lending or borrowing with interest (ribis). Explains how interest paid voluntarily, as a gift or paid ahead or late is still forbidden, and the duty to return it.

Learning Halacha in a year with Rabbi Trump through the prism of the Kitzur Shulchan Aruch.

Covers buying, selling and holding forbidden foods and unclean items, such as using them as a pledge or collecting them as payment for a debt. Notes that cheeses of non-Jews, forbidden only by Rabbinic decree, may be traded.

Learning Halacha in a year with Rabbi Trump through the prism of the Kitzur Shulchan Aruch.

Covers the prohibition of hurting or misleading people with words, such as asking the price of an item you do not intend to buy, or using a humiliating nickname. Also covers not deceiving a non-Jew and not offering a false invitation or gift.

Learning Halacha in a year with Rabbi Trump through the prism of the Kitzur Shulchan Aruch.

Covers the prohibition of deceiving others in business, whether buying, selling, hiring or changing money. Includes making goods look better than they are, mixing poor produce with good, and what a shopkeeper may do.

Learning Halacha in a year with Rabbi Trump through the prism of the Kitzur Shulchan Aruch.