It is narrated from Abu Wa'il (may Allah have mercy on him) that when the time of death approached Sayyiduna Khalid bin al-Walid (may Allah be pleased with him), he said: "I sought martyrdom, but it was decreed for me only that I die on my bed. There is no deed more hopeful than 'La ilaha illallah (There is no god but Allah)', while I am shielding myself with it." Then he said: "When I die, look at my weapons and my horse, and make them provision in the path of Allah."
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3797