Allah's Apostle came across me and I was Junub. He took my hand and I went along with him till he sat down. I slipped away, went home and took a bath. When I came back, he was still sitting there. He then said to me, "O Abu Huraira! Where have you been?" I told him about it. The Prophet said, "Subhan Allah! O Abu Huraira! A believer never becomes impure."