So and so is a martyr, till they happened to pass by a man and said: So and so is a martyr. Upon this the Messenger of Allah remarked: Nay, not so verily I have seen him in the Fire for the garment or cloak that he had stolen from the booty, Then the Messenger of Allah ﷺ said: Umar son of Khattab, go and announce to the people that none but the believers shall enter Paradise. He ('Umar b. Khattab) narrated: I went out and proclaimed: Verily none but the believers would enter Paradise.  

لَمَّا كَانَ يَوْمُ خَيْبَرَ أَقْبَلَ نَفَرٌ مِنْ صَحَابَةِ النَّبِيِّ ﷺ فَقَالُوا فُلاَنٌ شَهِيدٌ فُلاَنٌ شَهِيدٌ حَتَّى مَرُّوا عَلَى رَجُلٍ فَقَالُوا فُلاَنٌ شَهِيدٌ فَقَالَ رَسُولُ اللَّهِ ﷺ كَلاَّ إِنِّي رَأَيْتُهُ فِي النَّارِ فِي بُرْدَةٍ غَلَّهَا أَوْ عَبَاءَةٍ ثُمَّ قَالَ رَسُولُ اللَّهِ ﷺ يَا ابْنَ الْخَطَّابِ اذْهَبْ فَنَادِ فِي النَّاسِ إِنَّهُ لاَ يَدْخُلُ الْجَنَّةَ إِلاَّ الْمُؤْمِنُونَ قَالَ فَخَرَجْتُ فَنَادَيْتُ أَلاَ إِنَّهُ لاَ يَدْخُلُ الْجَنَّةَ إِلاَّ الْمُؤْمِنُونَ  

We went to Khaibar along with the Apostle ﷺ and Allah granted us victory. We plundered neither gold nor silver but laid our hands on goods, corn and clothes, and then bent our stops to a valley; along with the Messenger of Allah ﷺ there was a slave who was presented to him by one Rifa'a b. Zaid of the family of Judham, a tribe of Dubayb. When we got down into the valley the slave of the Messenger of Allah stood up and began to unpack the saddle-bag and was suddenly struck by a (stray) arrow which proved fatal. We said: There is a greeting for him, Messenger of Allah, as he is a martyr. Upon this the Messenger of Allah ﷺ remarked: Nay, not so. By Him in Whose hand is the life of Muhammad, the small garment which he stole from the booty on the day of Khaibar but which did not (legitimately) fall to his lot is burning like the Fire (of Hell) on him. The people were greatly perturbed (on hearing this). A person came there with a lace or two laces and said: Messenger of Allah, I found (them) on the day of Khaibar. He (the Holy Prophet) remarked: This is a lace of fire or two laces of fire.  

خَرَجْنَا مَعَ النَّبِيِّ ﷺ إِلَى خَيْبَرَ فَفَتَحَ اللَّهُ عَلَيْنَا فَلَمْ نَغْنَمْ ذَهَبًا وَلاَ وَرِقًا غَنِمْنَا الْمَتَاعَ وَالطَّعَامَ وَالثِّيَابَ ثُمَّ انْطَلَقْنَا إِلَى الْوَادِي وَمَعَ رَسُولِ اللَّهِ ﷺ عَبْدٌ لَهُ وَهَبَهُ لَهُ رَجُلٌ مِنْ جُذَامٍ يُدْعَى رِفَاعَةَ بْنَ زَيْدٍ مِنْ بَنِي الضُّبَيْبِ فَلَمَّا نَزَلْنَا الْوَادِيَ قَامَ عَبْدُ رَسُولِ اللَّهِ ﷺ يَحُلُّ رَحْلَهُ فَرُمِيَ بِسَهْمٍ فَكَانَ فِيهِ حَتْفُهُ فَقُلْنَا هَنِيئًا لَهُ الشَّهَادَةُ يَا رَسُولَ اللَّهِ قَالَ رَسُولُ اللَّهِ ﷺ كَلاَّ وَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ إِنَّ الشَّمْلَةَ لَتَلْتَهِبُ عَلَيْهِ نَارًا أَخَذَهَا مِنَ الْغَنَائِمِ يَوْمَ خَيْبَرَ لَمْ تُصِبْهَا الْمَقَاسِمُ قَالَ فَفَزِعَ النَّاسُ فَجَاءَ رَجُلٌ بِشِرَاكٍ أَوْ شِرَاكَيْنِ فَقَالَ يَا رَسُولَ اللَّهِ أَصَبْتُ يَوْمَ خَيْبَرَ فَقَالَ رَسُولُ اللَّهِ ﷺ شِرَاكٌ مِنْ نَارٍ أَوْ شِرَاكَانِ مِنْ نَارٍ