Gittin 76a - 77a
How must a condition be structured to be binding? \u2022 When do a series of conditions present multiple options for validation, and when does a subsequent condition negate a previously offered option? \u2022 When is a condition understood to be effective retroactively? \u2022 Defining a vague grace period; how much time is meant by after the sabbatical year, after a year, after Shabbos, or after the festival?