Very quickly review the גמרא דף לח. “איבעיא להו (twelve lines from bottom of the Amud) until “ב”ה אומרין (two dots – bottom of the Amud)
Questions:
The Gemara above discussed the halacha if someone violates the prohibition of שהייה. What is the Gemara question now עבר ושהה מאי?
Learn תוס’ “עבר
Why does Rashi explain the question of the Gemara different than Tosfos?
How does Rashi answer the question of Tosfos that the Gemara already ruled if one intentionally leaves food on the stove it is prohibited?
Learn מהרש”א על רש”י “עבר for an explanation
https://hebrewbooks.org/pdfpager.aspx?req=37953&st=&pgnum=453
Learn ר”ן דף לח. “והיכא דעבר who quoted the ראב”ד explanation that the מהרש”א says is the underpinning of Rashi.
Learn רא”ש פרק ג’ סוף ס’ א “עבר ושהה who gives two other explanations to the Gemara.
Learn רשב”א “הא דאיבעיא for another explanation of the Gemara.
https://hebrewbooks.org/pdfpager.aspx?req=40907&st=&pgnum=57
https://hebrewbooks.org/pdfpager.aspx?req=40907&st=&pgnum=57