Reference for Bava Batra 248:10

לעולם לרבנן ואצטריך סלקא דעתך אמינא מלוה כיון דנקיט שטרא כמאן דגביא דמיא קא משמע לן

Rab Judah said in the name of Samuel: A firstborn son does not take a double portion in a loan.<span class="x" onmousemove="('comment',' Due to the father; even though the heirs hold a bond of indebtedness against the borrower. ');">¹³</span> [According] to whom [was this statement required]?<span class="x" onmousemove="('comment',' I.e., whose view has Samuel adopted? ');">¹⁴</span>

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