Reference for Bava Batra 184:2

לא צריכא דאיכא לאישתלומי מיניה

'from your debtor accept [even] bran in payment'! — [The dispute between Rab and Samuel] is required only [in the case] where there is [capital] from which [the buyer] may be reimbursed. [In such a case] Rab said: The deal was made under false pretences [because] one must be guided by the general practice<span class="x" onmousemove="('comment',' Lit., 'majority'. ');">³</span> and most people buy [oxen] for ploughing. But Samuel said [in reply]: One is guided by the general practice in ritual, but not in monetary matters.

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