Halakhic reasoning and pesak (legal decision-making)
Halakhic reasoning and pesak (legal decision-making)
This domain tests how a ruling is derived and applied: the source’s authority, the type of doubt, and the accepted decisor. A correct answer names the principle, not just the conclusion.
Core rules
- Torah vs. Rabbinic: ספק דאורייתא לחומרא; ספק דרבנן לקולא. A doubt about a biblical obligation is resolved strictly; a doubt about a rabbinic obligation, leniently.
- Safek berachot l’kula: if one is unsure whether a berachah was recited, one does not repeat it, because berachot are rabbinic.
- Rov and chazakah: majority and established status can resolve doubts; they are not interchangeable.
- Kim li: a decisive tradition held by a party can shift the burden in a monetary dispute.
- Halakha ke-batrai: later authorities decide against earlier ones when they explicitly rule; for Sephardim, Maran (Shulchan Aruch); for Ashkenazim, Rema and subsequent Ashkenazi authorities.
- Minhag: established local practice can determine practice.
Worked example
A person cannot remember whether he said Birkat HaMazon. Do not treat this as a rabbinic doubt: the Torah commands ואכלת ושבעת וברכת, so Birkat HaMazon is d’Oraita. The exam answer: repeat it. For a berachah before food, by contrast, a doubt is resolved leniently (safek berachot l’kula). Reasoning: identify the obligation’s source first; only then apply the doubt rule.
Traps
- Applying ספק דאורייתא לחומרא to a rabbinic law.
- Citing a machloket without its maskana.
- Assuming Shulchan Aruch is binding on Ashkenazim without Rema.
- Using kim li where no tradition is claimed.
- Ignoring that a minhag can override a default.