Zevachim 104B

היו סובלין אותו במוטות. יצאו הראשונים חוץ לחומת העזרה והאחרונים לא יצאו ⁠– הראשונים מטמאין בגדים, והאחרונים אינן מטמאין בגדים עד שיצאו. יצאו אלו ואלו ⁠– מטמאין בגדים. רבי שמעון אומר: אינן מטמאין עד שיוצת האור ברובן. ניתך הבשר ⁠– אין השורף מטמא בגדים.

The priests would carry the bulls and the goats that are burned suspended on poles. When the first priests, carrying the front of the pole, emerged outside the wall of the Temple courtyard and the latter priests did not yet emerge, the first priests render their garments impure, and the latter priests do not render their garments impure until they emerge. When both these and those priests emerged, they render their garments impure. R' Shimon says: They do not render their garments impure, as this halakha applies only to those who burn the offerings. And even then their garments do not become ritually impure until the fire is ignited in the majority of the offerings. Once the flesh is completely scorched, with no moisture remaining, one who then burns the remains does not render his garments impure.

גמ׳ מאי בירה? אמר רבה בר בר חנה אמר רבי יוחנן: מקום יש בהר הבית, ו״בירה״ שמו. וריש לקיש אמר: כל הבית כולו קרוי ״בירה״, שנאמר: ״(ואל) הבירה אשר הכינותי״.

Talmud: The Mishnah teaches that if offerings of a type that are burned were disqualified, they are burned in a place of burning called the bira. The Talmud asks: What is the bira? Rabba bar bar Ḥana says that R' Yoḥanan says: There is a place on the Temple Mount, and its name is bira, and this is where they would burn these offerings. And Reish Lakish says: The entire Temple is called the bira, as it is stated in the prayer of David: “And give to Solomon my son a whole heart, to keep Your commandments, Your testimonies, and Your statutes, and to do all this, and to build the Temple [bira] for which I have made provision” (I Chronicles 29:19).