ספר "בשר על גבי גחלים"?

מה מקורו ומי מחברו של ספר "בשר על גבי גחלים" הנזכר בתוספות יבמות דף לד? תשובה מפורטת מאת הרה"ג ישראל שניאור שליט"א

שאלה:

תוספות במסכת יבמות דף לד ע"ב מפנים לספר "בשר על גבי גחלים". מהו ספר זה? מי הוא מחברו? האם הוא מובא בראשונים נוספים, ומדוע נקרא כך?

תשובה

בתשובה להנ"ל, ראיתי לנכון להעלות כאן תשובה מפורטת בעניין זה מאת הרה"ג ישראל שניאור שליט"א, אשר נשאל בעניין ומשיב על כך כדרכו בבקיאות מופלאה:

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