Reference for Chullin 226:6

הניחא למ"ד אין מלמדין אלא למ"ד מלמדין מאי איכא למימר

- [No, because] we have here two verses which teach the same thing, and one may not draw any conclusions from two verses which teach the same thing.<span class="x" onmousemove="('comment',' V. supra 61b.');">³</span>

Jastrow