The Messenger of Allah ﷺ prohibited us to pray in a sheet of cloth without crossing both its ends, and he also prohibited us to pray in a wrapper without putting on a sheet. (Using translation from Abū Dāʾūd 636)
«نَهَى رَسُولُ اللَّهِ ﷺ أَنْ يُصَلَّى فِي لِحَافٍ لَا يُتَوَشَّحُ بِهِ وَنَهَى أَنْ يُصَلِّيَ الرَّجُلُ فِي سَرَاوِيلَ وَلَيْسَ عَلَيْهِ رِدَاءٌ»