Sahih al-Bukhari 4046
Sahih al-Bukhari · Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · The Ghazwa of Uhud
Narrated Jabir bin `Abdullah:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدٍ ، حَدَّثَنَا سُفْيَانُ ، عَنْ عَمْرٍو ، سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ ـ رضى الله عنهما ـ قَالَ قَالَ رَجُلٌ لِلنَّبِيِّ صلى الله عليه وسلم يَوْمَ أُحُدٍ أَرَأَيْتَ إِنْ قُتِلْتُ فَأَيْنَ أَنَا قَالَ " فِي الْجَنَّةِ " فَأَلْقَى تَمَرَاتٍ فِي يَدِهِ، ثُمَّ قَاتَلَ حَتَّى قُتِلَ .
On the day of the battle of Uhud, a man came to the Prophet (ﷺ) and said, "Can you tell me where I will be if I should get martyred?" The Prophet (ﷺ) replied, "In Paradise." The man threw away some dates he was carrying in his hand, and fought till he was martyred .