(Exodus 23:13) "And everything that I have spoken of to you, you shall observe": What is the intent of this? From (Ibid. 20:11) "You shall not perform any labor," I know only of labor per se. Whence do I derive (the same for) shvuth (things bordering on labor)? From "Everything that I have spoken of to you, you shall observe."
We Know That Labor Itself Is Forbidden on the Sabbath
Mekhilta Tractate Kaspa 4:1