Narrated Jabir b. 'Abd Allah:

The Messenger of Allah ﷺ combined two persons from among the martyrs of Uhud (in one garment), and said: Which of the two has learnt the Qur'an more ? When one of them was pointed to him, he advanced him in the grave, saying: I shall be witness to all these (martyrs) on the Day of Judgement. He then ordered them to be buried without being washed.

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، وَيَزِيدُ بْنُ خَالِدِ بْنِ مَوْهَبٍ، أَنَّ اللَّيْثَ، حَدَّثَهُمْ عَنِ ابْنِ شِهَابٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ كَعْبِ بْنِ مَالِكٍ، أَنَّ جَابِرَ بْنَ عَبْدِ اللَّهِ، أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَجْمَعُ بَيْنَ الرَّجُلَيْنِ مِنْ قَتْلَى أُحُدٍ وَيَقُولُ " أَيُّهُمَا أَكْثَرُ أَخْذًا لِلْقُرْآنِ " . فَإِذَا أُشِيرَ لَهُ إِلَى أَحَدِهِمَا قَدَّمَهُ فِي اللَّحْدِ وَقَالَ " أَنَا شَهِيدٌ عَلَى هَؤُلاَءِ يَوْمَ الْقِيَامَةِ " . وَأَمَرَ بِدَفْنِهِمْ بِدِمَائِهِمْ وَلَمْ يُغَسَّلُوا .