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 اللهِ ﷺ أَنْ يُصَلِّيَ الرَّجُلُ فِي لِحَافٍ لَا يَتَوَشَّحُ بِهِ وَنَهَى أَنْ يُصَلِّيَ الرَّجُلُ فِي سَرَاوِيلَ وَلَيْسَ عَلَيْهِ رِدَاءٌ