This hadeeth comes under the following chapter: WHENEVER A BELIEVER FALLS SICK OR IS STRICKEN WITH GRIEF OR SOMETHING LIKE IT, THERE IS A REWARD FOR HIM EVEN IF IT IS PRICKING OF A THORN
This hadith has been transmitted on the authority of jarir and the hadith transmitted on the authority of Abu Mu'awiya there is an addition of these words: He said: Yes, by Him in Whose Hand is my life, there is no Muslim upon the earth." The rest of the hadith is the same.