Commentary for Chullin 277:19

ושמואל אמר

But why does not Rab suggest the case of Samuel? - Rab would answer thus: It is only in the case where a man consecrated the young of his dove-cote that one is not bound to let the dam go, for they are consecrated for the altar; and inasmuch as they are themselves consecrated for an offering, [even though they break loose,] their sanctity has not gone.<span class="x" onmousemove="('comment',' And the law of letting the dam go does not apply.');">¹³</span>

Rashi on Chullin