Measuring for a mitzvah - "מדידה של מצוה". Preferably should be done on "ערב שבת".
How High off the Ground Are We Talking About When We Say One Cannot Make Use of a Tree? Shaking a Very Thin Tree...
ודבר דבר (Dabair Davar): Mentioning Something That Somebody Will Do After Shabbos When It's Not Allowed to Be Done on Shabbos Itself;