Reference for Zevachim 31:17

ואידך מ"ט לא אמר מהן הקריבו קסבר מפני טומאה נשרפה

hence if another [priest, when an onen,] does not go out, he does profane [it]. R'Eleazar said, [it is inferred] from this verse: Behold, have they offered [their sin-offering a burnt-offering this day before the Lord]?<span class="x" onmousemove="('comment',' Ibid. X, 19.');">²²</span>

Jastrow