Reference for Chullin 279:25

למאי

Moreover, both according to him who says that a trefah can continue to live and him who says that it cannot continue to live, this<span class="x" onmousemove="('comment',' That a trefah bird may not be used in the purification rites of a leper.');">¹⁷</span>

Jastrow

Jastrow