It was narrated that Huthaifah said:

"When the Messenger of Allah ﷺ 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 ﷺ said: 'The Muslim is not made impure (Najis).'"

أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا جَرِيرٌ، عَنِ الشَّيْبَانِيِّ، عَنْ أَبِي بُرْدَةَ، عَنْ حُذَيْفَةَ، قَالَ كَانَ رَسُولُ اللَّهِ ﷺ 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 ﷺ " إِنَّ الْمُسْلِمَ لاَ يَنْجُسُ " .