We emigrated with Messenger of Allah (ﷺ) seeking the pleasure of Allah and expecting our reward from Him. Some of us died without enjoying anything of it. Among them was Mus'ab bin 'Umair (May Allah be pleased with him), who was killed in the battle of Uhud, leaving only a small coloured sheet of wool (which we used as his shroud). When we covered his head with it, his feet were exposed, and when we covered his feet with it, his head was uncovered. So the Prophet (ﷺ) told us to cover his head and to put some Idhkhir (i.e., fragrant grass) over his feet. Others among us enjoy prosperity.

[Al-Bukhari and Muslim].