Related for Eruvin 74:1
אלא אי בלקיחת בעלים אי בעשיית כהן
except at the time they are purchased by their owner<span class="x" onmousemove="('comment',' Who must then specifically declare the specific purpose for which each bird is to be used.');"><sup>1</sup></span> or when the priest prepares them [for the altar].<span class="x" onmousemove="('comment',' Ker. 28a, Yoma 41a; but if when the birds were bought none of them was designated as a burnt, or as a sin-offering, the priest is at liberty (cf. supra 11. 1) to choose either bird for either sacrifice.');"><sup>2</sup></span> Is it then still [maintained that] R'Jose is of the opinion that the rule of bererah is not to be upheld? W not in fact taught: If an 'Am ha-arez<span class="x" onmousemove="('comment',' V. Glos. texukd');"><sup>3</sup></span>