BURIAL OF MARTYRS H H 353 "After the Battle of Uhud, the Prophet, praise and peace be upon him, arranged for the martyrs to be buried in pairs. At each interment he would inquire which of the two knew the most of the Koran by heart, whereupon the one who was named was placed in the grave first." R 353 Bukhari with a chain up to Jabir who related this.
352- وعن جابر رضي الله عنه : أن النَّبيّ صلى الله عليه وآله وسلم كَانَ يَجْمَعُ بَيْنَ الرَّجُلَيْنِ مِنْ قَتْلَى أُحُد يَعْنِي في القَبْرِ ، ثُمَّ يَقُولُ : "أيُّهُما أكْثَرُ أخذاً للقُرآنِ ؟" فَإذَا أُشيرَ لَهُ إِلَى أحَدِهِمَا قَدَّمَهُ في اللَّحْدِ . رواه البخاري .