Ayesha reported,

When the Messenger of Allah ﷺ returned on the day of the Trench, he laid down his weapons and bathed. Then Jibril came to him with dust still covering his head and said, "Have you laid down your weapons? By Allah, I have not laid mine down."The Messenger of Allah ﷺ asked, "Where then?"Jibril replied, "Over here," and he pointed toward Banu Qurayza.She said, So the Messenger of Allah ﷺ went out to them.

Bukhari 2813

Sahih

حدثنا محمد بن سلام أخبرنا عبدة عن هشام بن عروة عن أبيه

عن عائشة رضي الله عنها

أن رسول الله ﷺ لما رجع يوم الخندق ووضع السلاح واغتسل فأتاه جبريل وقد عصب رأسه الغبار فقال وضعت السلاح فوالله ما وضعته فقال رسول الله ﷺ فأين قال ها هنا وأومأ إلى بني قريظة قالت فخرج إليهم رسول الله ﷺ

البخاري 2813صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Jihad and expeditions
Chapter
Ghusl after battle and dust
Numbering
Darussalam 2813
Bukhari 2813