Kesubos 4b-6a
When should marriages take place? \u2022 When are various seemingly mundane discussions permitted on Shabbos? \u2022 Why doesn't the Rambam codify directly the obligation to teach one's son how to earn a livelihood? \u2022 The great debate about Psik Raisha between the Aruch and the Ri: must the concurrent consequence be beneficial to be prohibited?