Sahih Muslim
The Book of Prayers (Kitab Al-Salat)
Book Number: 004 / Hadith Number: 966
This hadith with the same chain of transmitters has been narrated by Shu'ba, and in the narration of Mu'adh the words are:" just as the white garment is cleansed from filth," and in the narration of Yazid:" from dirt".