Reference for Yevamot 64:9
התחיל ר"ח לדון טומאה לכל נאסרה כשהותרה במקדש אצל כהנים תמימים הותרה לכהנים תמימים הותרה ולא לבעלי מומין יש כאן משום בעלי מומין ויש כאן משום טומאה התחיל בר קפרא לדון טומאה לכל נאסרה כשהותרה במקדש הותרה אין כאן אלא משום בעל מום
two'! Bar Kappara jumped up and took an oath, 'By the Temple. thus have I heard from Rabbi:<span class="x" onmousemove="('comment',' R. Judah the Prince, compiler of the Mishnah. ');"><sup>21</sup></span> one'! R. Hiyya began to argue the point thus: Work on the Sabbath was forbidden to all [Israelites,] and when it was permitted in the [Sanctuary], it was permitted to the priests, hence it was permitted to the priests only, but not to common men. Here, therefore, is involved the offence of Temple service by a common man, and that of the desecration of the Sabbath. Bar Kappara began to argue his point thus: Work on the Sabbath was forbidden to all [Israelites]. but when it was permitted in the Sanctuary, it was permitted [to all], hence only the offence of Temple service by a common man is here involved. A priest having a blemish who performed [some Temple] services<span class="x" onmousemove="('comment',' Such as that connected with the rites of a congregational offering which may be performed in certain circumstances by priests (v. Yoma 6b). even when they are unclean, provided they are physically fit. ');"><sup>22</sup></span>