ת"ר מעשה בהלל הזקן שהביא עולתו לעזרה לסמוך עליה ביו"ט חברו עליו תלמידי שמאי הזקן אמרו לו מה טיבה של בהמה זו אמר להם נקבה היא ולזבחי שלמים הבאתיה כשכש להם בזנבה והלכו להם
§ The Gemara returns to the basic dispute between Beit Shammai and Beit Hillel. The Sages taught in a baraita: There was an incident involving Hillel the Elder, who brought his burnt-offering to the Temple courtyard in order to place his hands on the animal’s head on a Festival. The students of Shammai the Elder gathered around him and said to him: What is the nature of this animal that you are bringing? Hillel, being humble and meek, did not want to quarrel with them in the Temple and therefore concealed the truth from them for the sake of peace. He said to them: It is a female, and I have brought it as a peace-offering, as burnt-offerings are always male. He swung its tail for them so that they would not be able to properly discern whether the animal was male or female, and they departed.