The Gemara in Shabbos says that Bibi bar Abaye asks if one can violate a Rabbinic commandment (unsticking a loaf from an oven) to save oneself from being "chayav a chattas". The Gemara says that ...
The Gemara Shabbath (several pages, but look anywhere from 59a through at least 62a for several discussions) contains a great deal of discussion about wearing "Tachshitim" (ornaments/jewelry) on ...
It says in Shabbos (12a) that one should always check his pockets on Friday so he won't accidentally carry on Shabbos. I don't understand the purpose of this checking. Even if one did carry ...
In the Mishna, Shabbat 1:3, it states (amongst other things) that one should not delouse one's garments by candlelight on Shabbat (ולא יפלה את כליו... לאור הנר). The following mishna, however, states ...