What is the minimum amount of wine that triggers carrying liability on Shabbat?
A quarter revi'it — the amount needed to mix into a cup of wine for the Kiddush mixture. The measure reflects the wine's practical use.
Question 2
You carry a live cat from one domain to another on Shabbat. What is the minimum size for liability?
Living animals have no minimum measure. Since the animal carries itself (partially), any living creature creates liability regardless of size.
Question 3
You carry a living person from one domain to another. Are you liable for "carrying"?
A living person is not halachically a "burden." But if they're wearing or carrying objects (like a purse), you're liable for those objects.
Question 4
You carry half the required measure, put it down, then carry the other half. Are you liable?
Each carrying act is independent. Putting down breaks the continuity. Half-measures separated by hanacha (placement) don't combine into a full measure.
Question 5
A person stores a tiny amount of a substance for a specific use. What happens to its carrying measure?
When someone deliberately stores a substance for a purpose, that stored amount becomes personally significant — carrying it creates liability even below the standard measure.