Abu Barza reported,

The Prophet ﷺ was on a military expedition, and Allah granted him spoils of war. He asked his companions, "Do you find anyone missing?"They replied, "Yes, so-and-so, so-and-so, and so-and-so."He asked again, "Do you find anyone missing?"They said, "Yes, so-and-so, so-and-so, and so-and-so."He asked a third time, "Do you find anyone missing?"They said, "No."He said, "But I find Julaybib missing. Search for him."They searched among the slain and found him beside seven men he had killed before they killed him. The Prophet ﷺ came, stood over him, and said, "He killed seven, then they killed him. This man is from me, and I am from him. This man is from me, and I am from him."Then the Prophet ﷺ placed him on his forearms, with nothing to carry him but the forearms of the Prophet ﷺ. A grave was dug for him, and he was placed in it. No mention was made of washing him.

Azami 3756

Sahih

عن أبي برزة

أن النبي ﷺ كان في مغزى له، فأفاء الله عليه، فقال لأصحابه: هل تفقدون من أحد؟ قالوا: نعم، فلانا وفلانا وفلانا، ثم قال: هل تفقدون من أحد؟ قالوا: نعم، فلانا وفلانا وفلانا، ثم قال: هل تفقدون من أحد؟ قالوا: لا. قال: لكني أفقد جليبيبا فاطلبوه فطلب في القتلى، فوجدوه إلى جنب سبعة قد قتلهم، ثم قتلوه، فأتى النبي ﷺ فوقف عليه فقال: قتل سبعة، ثم قتلوه هذا مني، وأنا منه، هذا مني وأنا منه قال: فوضعه على ساعديه، ليس له إلا ساعدا النبي ﷺ قال: فحفر له، ووضع في قبره، ولم يذكر غسلا.

الأعظمي 3756صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Funerals
Chapter
Washing the martyrs, praying over them, and burying them
Section
Martyr in the cause of Allah is not washed, his clothes in which he was martyred are not removed, and the funeral prayer is not offered for him
Numbering
Jami al-Kamil 3756 (2nd edition)
Azami 3756