Nehemiah 13:19

but the seventh day is a sabbath of Yahweh your God; in it you shall not do any work, you or your son or your daughter, your male or your female slave or your cattle or your sojourner who is within your gates.

As for the peoples of the land who bring wares or any grain on the sabbath day to sell, we will not receive from them on the sabbath or a holy day; and we will forego the crops the seventh year and the exaction of every debt.

‘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.

So the Jews were saying to the man who had been healed, “It is the Sabbath, and it is not lawful for you to carry your mat.”