Reference for Chullin 45:1

כי איצטריך קרא למעוטי נרבע ונעבד

The verse is required to exclude birds that have suffered an unnatural crime or that have been worshipped.<span class="x" onmousemove="('comment',' These birds may not be offered as sacrifices. The suggestion, therefore, that the verse Purports to exclude such birds whose neck feathers begin to glisten, is now abandoned.');">¹</span>

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