Reference for Bekhorot 72:5

אמר ר' ירמיה בר אבא

- There [again] since there is an inquirer, he is afraid.<span class="x" onmousemove="('comment',' Since he sees that the sender is particular, having mentioned a specific name, he is aware that the sender will certainly make inquiries, and therefore the agent is believed, but not for the reason which Rab Judah states. In the case, however, of the firstling, the priest is not afraid, thinking that nobody will trouble to ascertain whether his statement is correct.');">⁵</span>

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