Catena Aurea on Mark 1:29–31: Bede

But in that He gives most profusely His gifts of healing and doctrine on the sabbath day, He teaches, that He is not under the Law, but above the Law, and does not choose the Jewish sabbath, but the true sabbath, and our rest is pleasing to the Lord, if, in order to attend to the health of our souls, we abstain from slavish work, that is, from all unlawful things.

It goes on, “And immediately the fever left her, &c.”