- Wearing wool clothing on top of linen clothing or vice versa
- Sweat of angels
- Standing for Chazaras Hashatz
- Not giving is the lowest Kelipa
- Marrying a Kohenes-the daughter of a Kohen
- Davening Mincha after accepting Tosefes Shabbos
- If a Kohen is not found in Shul, may a Levi be called up in place of the Kohen?