Sayyiduna Khabbab (may Allah be pleased with him) said: We emigrated with the Messenger of Allah (peace and blessings be upon him), seeking the pleasure of Allah, so our reward became due upon Allah. Among us were those who departed (from this world) without consuming anything of their reward; among them was Sayyiduna Mus'ab bin Umayr (may Allah be pleased with him). He was martyred on the day of Uhud, and he had nothing except a striped woollen cloak. When we covered his head, his feet came out, and when we covered his feet, his head came out. So the Messenger of Allah (peace and blessings be upon him) said: "Cover his head with it and place idhkhir grass over his feet." And among us are those whose fruit has ripened for them and they are picking it.
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3642