حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا إِسْمَاعِيلُ ابْنُ عُلَيَّةَ، عَنْ حُمَيْدٍ، عَنْ بَكْرِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِي رَافِعٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّهُ لَقِيَهُ النَّبِيُّ ـ صلى الله عليه وسلم ـ فِي طَرِيقٍ مِنْ طُرُقِ الْمَدِينَةِ وَهُوَ جُنُبٌ فَانْسَلَّ فَفَقَدَهُ النَّبِيُّ ـ صلى الله عليه وسلم ـ فَلَمَّا جَاءَ قَالَ ‏"‏ أَيْنَ كُنْتَ يَا أَبَا هُرَيْرَةَ ‏"‏ ‏.‏ قَالَ يَا رَسُولَ اللَّهِ لَقِيتَنِي وَأَنَا جُنُبٌ فَكَرِهْتُ أَنْ أُجَالِسَكَ حَتَّى أَغْتَسِلَ ‏.‏ فَقَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏"‏ الْمُؤْمِنُ لاَ يَنْجُسُ ‏"‏ ‏.‏

It was narrated from Abu Rafi' that : Abu Hurairah was met by the Prophet in one of the streets of Al-Madinah when he was in a state of sexual impurity, so he slipped away. The Prophet missed him, so when he came (later on), he said: 'Where were you O Abu Hurairah?' He said: 'O Messenger of Allah, you met me when I was in a state of sexual impurity, and I did not want to sit with you until I had a bath. The Messenger of Allah said: 'The believer does not become impure.'" Translation Not Available

Book Ref: Sunan Ibn Majah Book 1 Hadith 534
Web Ref:  Sunan Ibn Majah Vol 1 Book 1 Hadith 534