Mus'ab b. 'Umar was killed at the battle of Uhud, and for him only a coarse cloth would be found as shroud. When we covered his head, his feet showed, and when we covered his feet, his head showed. So the Messenger of Allah ﷺ said: Cover his head with it (cloth), and put some rushes over his feet.  

رَسُولُ اللَّهِ ﷺ غَطُّوا بِهَا رَأْسَهُ وَاجْعَلُوا عَلَى رِجْلَيْهِ مِنَ الإِذْخِرِ