Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) said: A man said to the Prophet (peace and blessings be upon him) on the day of Uhud: O Messenger of Allah! If I am martyred, where will I be? He (peace and blessings be upon him) said: "In Paradise." The man threw away the dates in his hand, then fought until he was martyred.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18196