(Ibid. 2) "and on the seventh day it shall be holy for you": That Israel not say: Since we are permitted to perform labor (i.e., the daily offering) in the Temple (on Sabbath), it should (also) be permitted outside the Temple. It is, therefore, written "(Sabbath) shall be holy for you," (labor being forbidden to you), but for the L–rd (i.e., for sacrifice), it is "mundane."
If Labor for the Temple Service Is Permitted on the Sabbath
Mekhilta Tractate Shabbata 2:6