Reference for Chullin 161:32

אחד בפנים ואחד בחוץ לרבנן ראשון כשר ופטור שני פסול ופטור

The punishment of stripes for the [transgression of the] law of 'It and its young' does not apply to consecrated animals.<span class="x" onmousemove="('comment',' The reason being that the slaughtering of the first animal, having been performed according to all its rites, renders the second animal 'out of time', so that the slaughtering of the latter is no slaughtering and the punishment of stripes not incurred thereby (Rashi) .');">¹⁴</span>

Jastrow

Jastrow