أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا جَرِيرٌ، عَنِ الشَّيْبَانِيِّ، عَنْ أَبِي بُرْدَةَ، عَنْ حُذَيْفَةَ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِذَا لَقِيَ الرَّجُلَ مِنْ أَصْحَابِهِ مَاسَحَهُ وَدَعَا لَهُ - قَالَ - فَرَأَيْتُهُ يَوْمًا بُكْرَةً فَحِدْتُ عَنْهُ ثُمَّ أَتَيْتُهُ حِينَ ارْتَفَعَ النَّهَارُ فَقَالَ ‏"‏ إِنِّي رَأَيْتُكَ فَحِدْتَ عَنِّي ‏"‏ ‏.‏ فَقُلْتُ إِنِّي كُنْتُ جُنُبًا فَخَشِيتُ أَنْ تَمَسَّنِي ‏.‏ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ إِنَّ الْمُسْلِمَ لاَ يَنْجُسُ ‏"‏ ‏.‏

It was narrated that Huthaifah said: "When the Messenger of Allah (PBUH) met a man from among his Companions, he would shake hands with him and supplicate for him. I saw him one day in the early morning, and I tried to avoid him, then I came to him later in the day. He said: 'I saw you but you were avoiding me.' I said: 'I was Junub and I was afraid that you would touch me.' The Messenger of Allah (PBUH) said: 'The Muslim is not made impure (Najis).'" Translation Not Available

Book Ref: Sunan An Nisai Book 1 Hadith 268
Web Ref:  Sunan An Nisai Not Available