Sahih Muslim Book 19, Hadith Number 4471.

Chapter : The expedition called Dhat-ur-Riqa.

It has been narrated on the authority of Abu Musa (Ash’ari) who said: We set out on an expedition with the Messenger of Allah (may peace be upon him). We were six in number and had (with us) only one camel which we rode turn by turn Our feet were injured. My feet were so badly injured that my nails dropped off. We covered our feet with rags, so this expedition was called Dhat-ur-Riqa’ (i.e. the expedition of rags) because we bandaged our feet with rags (on that day). Abu Burda said: Abu Musa narrated this tradition, and then disliked repeating it as he did not want to give any publicity to what he did in a noble cause Abu Usama said: Narrators other than Abu Buraida have added to the version of the words: “God will reward it.”