Reference for Yoma 54:10

הך דלית לה תקנתא קתני הך דאית לה תקנתא לא קתני

- It is different with the killing because that is the beginning of the service. Mar Zutra or R'Ashi said: But we have learned otherwise: The officer said to them: Go forth and see if the time for the killing [of the continual morning sacrifice] has arrived,<span class="x" onmousemove="('comment',' Infra 28a.');">⁸</span>

Jastrow