The last moments of sayidinah khalid bin waleed

[London786]

When the time of Hazrat Khalid bin waleed (ra) came to depart from the
world, he said,I reached every possible place for Shahadah, but
it was written in my fate that I should die on my bed. In my
opinion there is no deed more dearer than my waiting with my
horse and shield in the darkness of night, the sky to be glittering
due to the rain, waiting for the onset of dawn, so that I can attack
the enemy

related by ibn mubarak

[Rahmaniyyah]

I'm sure you know, but he passed away on his bed because he was the sword of Allah, radhiyallahu 'anhu - it could not be killed on the battlefield.