Sayyiduna Salamah bin al-Akwa' (may Allah be pleased with him) narrates: On the day of Khaybar my brother fought fiercely alongside the Messenger of Allah (peace and blessings be upon him); then his own sword rebounded on him, and he died of it. Then the narrator narrated the rest of the report similarly, as has passed before.
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6200