Quickly review the Gemara דף לו. “בעי רבא (third line) until ת”ש
Continue learning the Gemara until אמר מר (just focus on the case of תפוח סרוח which is being used as a proof to answered the uncertainty of Rava)
https://hebrewbooks.org/shas.aspx?mesechta=7&daf=36&format=pdf
Question:
Why do the סימני טריפה of an animal apply to an Esrog?
See פני יהושע https://hebrewbooks.org/pdfpager.aspx?req=19251&st=&pgnum=520
If the question of Rava was about an Esrog in which the internal fleshy part melted and we are uncertain if the rotting will affect the seed case. Why don’t they just test it out?
Learn שפת אמת
https://hebrewbooks.org/pdfpager.aspx?req=14522&st=&pgnum=196
Learn the ראש ס’ י”ח starting from “ניקב (third line) until וכן מסתבר
https://hebrewbooks.org/pdfpager.aspx?req=14319&st=&pgnum=479&hilite=
The Gemara understands that an Esrog that has סימני טריפה is Pasul. Why is it Pasul? Is this a new reason to disqualify or does it fall under the category of lack of Hidur or lack of לקיחה תמה?
See last three lines of the ראש ס’ י”ח starting from ” וכן משמע
https://hebrewbooks.org/pdfpager.aspx?req=14319&st=&pgnum=479&hilite=
Learn “תוספת “אי
Tosfos discusses three points
- How much has to be cracked to be disqualified from נסדק.
- The statement of תנינא by ניקב is different than by נקלף & נסדק.
- A hole that reaches to the core is considered a נקב מפולש.
Question:
According to the Tosfos & the Rosh why is an Esrog which is pierced to its seed case Pasul?
How do we rule according to Halacha?
Learn שולחן ערוך ס’ תרמ”ח סעיף ב & ג with the משנה ברורה
https://hebrewbooks.org/pdfpager.aspx?req=60391&st=&pgnum=234
Write out the two opinions (Rashi & Raavad) brought in the Shulchan Aruch who argue what type of piercings disqualify an Esrog.
List the differences between them and how and when we rule leniently like the Raavad