Sahih al-Bukhari 2811
صحيح البخاري#2811SahihNarrated Abu `Abs:(who is `Abdur-Rahman bin Jabir) Allah's Messenger (ﷺ) said," Anyone whose both feet get covered with dust in Allah's Cause will not be touched by the (Hell) fire
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 56:27