אזל שדר בידיה עגלא תלתא בהדי דקאתי שדא ביה מומא בניב שפתים ואמרי לה בדוקין שבעין דוכתא דלדידן הוה מומא ולדידהו לאו מומא הוא סבור רבנן לקרוביה משום שלום מלכות אמר להו רבי זכריה בן אבקולס יאמרו בעלי מומין קריבין לגבי מזבח סבור למיקטליה דלא ליזיל ולימא אמר להו רבי זכריה יאמרו מטיל מום בקדשים יהרג אמר רבי יוחנן ענוותנותו של רבי זכריה בן אבקולס החריבה את ביתנו ושרפה את היכלנו והגליתנו מארצנו
The emperor went and sent with him a choice three-year-old calf. While bar Kamtza was coming with the calf to the Temple, he made a blemish on the calf’s upper lip. And some say he made the blemish on its eyelids, a place where according to us, i.e., halakha, it is a blemish, but according to them, gentile rules for their offerings, it is not a blemish. Therefore, when bar Kamtza brought the animal to the Temple, the priests would not sacrifice it on the altar since it was blemished, but they also could not explain this satisfactorily to the gentile authorities, who did not consider it to be blemished. The blemish notwithstanding, the Sages thought to sacrifice the animal as an offering due to the imperative to maintain peace with the government. Rabbi Zekharya ben Avkolas said to them: If the priests do that, people will say that blemished animals may be sacrificed as offerings on the altar. The Sages said: If we do not sacrifice it, then we must prevent bar Kamtza from reporting this to the emperor. The Sages thought to kill him so that he would not go and speak against them. Rabbi Zekharya said to them: If you kill him, people will say that one who makes a blemish on sacrificial animals is to be killed. As a result, they did nothing, bar Kamtza’s slander was accepted by the authorities, and consequently the war between the Jews and the Romans began. Rabbi Yoḥanan says: The excessive humility of Rabbi Zekharya ben Avkolas destroyed our Temple, burned our Sanctuary, and exiled us from our land.