Machlokes Geonim, Mechaber’s opinion. A question on our minhag from a Gemarah. A safek lahalcha based on a chakirah backing the question. An answer to the question & rejection. Second answer based on Rif & two answers from the Ran. Third answer with proof from a gamarah. Nafka Mina le’halacha. A bit complex, but not too difficult. Possibility of skipping parts Recommended if you have plenty time till the Bar mitzvah.
Behag, of Rav Saadya and Rav Hai Gaon, Rif, Ran, Chidushei Harim, Reb Akiva Eiger, Reb Yosef Engel, Reb Shmuel Engel.