Abu Musa reported God’s messenger as saying, “When a man is ill or on a journey, what he was accustomed to do when staying at home and well will be recorded for him.”(This refers to his observance of salat, etc., cf. the traditions of ‘Abdallah b. 'Amr and Anas on p. 326.)
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.
Abu Huraira reported God’s messenger as saying, “The believer is like a plant which is continually swayed by the wind, for the believer is continually afflicted by trial; but the hypocrite is like a cedar tree which does not shake till it is cut down.”
(Bukharl and Muslim.)