(21) The Book of Funerals
كتاب الجنائز
(83) Chapter: Where Should The Martyr Be Buried?
(83) باب أَيْنَ يُدْفَنُ الشَّهِيدُ
Sunan an-Nasa'i 2004 
It was narrated from Jabir bin 'Abdullah:
That the Prophet commanded that those who had been killed at Uhud should be taken back to the place where they fell; they had been brought to Al-Madinah.
أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، قَالَ حَدَّثَنَا الأَسْوَدُ بْنُ قَيْسٍ، عَنْ نُبَيْحٍ الْعَنَزِيِّ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، ‏:‏ أَنَّ النَّبِيَّ صلى الله عليه وسلم أَمَرَ بِقَتْلَى أُحُدٍ أَنْ يُرَدُّوا إِلَى مَصَارِعِهِمْ، وَكَانُوا قَدْ نُقِلُوا إِلَى الْمَدِينَةِ ‏.‏
Grade :  Sahih (Darussalam)
Reference : Sunan an-Nasa'i 2004
In-book reference : Book 21, Hadith 187
English translation : Vol. 3, Book 21, Hadith 2006