Jabir told of God’s messenger visiting Umm as-Sa’ib (Ibn 'Abd al-Barr (Isti'ab, p. 781) gives her name in this form, but says she is called by some Umm al-Musayyib) and asking,“What is the matter with you that you are trembling?”She replied,“Fever; may God not bless it.”He said,“Do not revile fever, for it removes the sins of the sons of Adam just as the bellows remove the dross of iron.”Muslim transmitted it.