Hi Rabbi,
The Rambam in Hilkhot Shabbat 24:1 calls certain activities “asur” even though they neither resemble melacha nor lead to melacha, based on the verses about honoring Shabbat. Does this mean an activity can be forbidden solely because it goes against the spirit of Shabbat, even without another specific prohibition? Or is “asur” limited to the particular activities covered by those verses and the halachic sources, rather than whatever feels inappropriate to each person?
The Rambam is not establishing a general prohibition against anything that someone feels is contrary to the “spirit of Shabbat.”
He is discussing specific categories of activities that Chazal prohibited, even though they are not melachot and do not necessarily lead to melacha. These prohibitions are based on the verses in Yeshayahu concerning how Shabbat should be observed.
For example, the Rambam mentions discussing business transactions, making business arrangements, or walking somewhere on Shabbat specifically to attend to one’s business affairs.
These are defined halachic prohibitions, not an open-ended authority to prohibit anything that seems inappropriate for Shabbat. The Rambam’s words “כל זה וכיוצא בו” extend the prohibition to comparable activities, not to whatever an individual finds objectionable.
The distinction is important. Something may not be in keeping with one’s personal idea of how Shabbat should be spent, but that does not automatically make it *assur*. We must distinguish between what Halachah actually prohibits and what someone believes would be a more appropriate way to observe Shabbat.
See Rambam, Hilchot Shabbat 24:1–2. Also see Shulchan Aruch OC 306