Numbers 15:34

“Six days work may be done, but on the seventh day you shall have a holy day, a sabbath of complete rest to Yahweh; whoever does any work on it shall be put to death.

And they put him in custody so that the command of Yahweh might be made clear to them.

‘Thus says Yahweh, “Take care of yourselves, and do not carry any load on the sabbath day or bring anything in through the gates of Jerusalem.

And if the first piece of dough is holy, the lump is also; and if the root is holy, the branches are too.