R. Yonathan says: This (derivation) is not necessary. If labor is forbidden on the first and last days, which are neither preceded nor followed by holiness, then how much more so chol hamoed , which is both preceded and followed by holiness!—(No,) this is refuted by the six days of creation, on which labor is not forbidden, though they are preceded and followed by holiness (i.e., Sabbath)!—No, this may be true of the six days of creation, on which there is no mussaf offering, as opposed to chol hamoed , on which there is a mussaf offering, wherefore labor is forbidden upon them. (No,) this is refuted by the New Moons, where labor is permitted, even though there is a mussaf offering upon them. (No,) this may be true of New Moons, which are not called "callings of holiness," as opposed to chol hamoed , which is called "a calling of holiness," wherefore labor should be forbidden upon them. We hereby derive that labor is forbidden on chol hamoed .