Reference for Pesachim 33:8
אמר רב נחמן אמר רבה בר אבוה בקיאין הן בטומאת מת ואין בקיאין הן בטומאת שרץ
Rabina said: There it was a fourth degree; here it was a third.<span class="x" onmousemove="('comment',' They were quite unaware that there is a fourth degree, but his second question related to the third degree, Rabina translating thus: If the uncleanness of a dead body touch etc. Since a corpse is a super principal (father of fathers) of uncleanness, the oil would be a third, and of this they knew.');"><sup>9</sup></span> Come and hear: Then answered Haggai and said, So is this people, and so is this nation before me, saith the Lord: and so is every work of their hands: and that which they offer there is unclean.<span class="x" onmousemove="('comment',' Ibid. 14.');"><sup>10</sup></span>