if one of you has two (piece of) cloth, he should pray in them; if he has a single (piece of) cloth, he should use it as a wrapper, and should not hang it upon the shoulder like the Jews.  

قَالَ رَسُولُ اللَّهِ ﷺ أَوْ قَالَ قَالَ عُمَرُ ؓ إِذَا كَانَ لأَحَدِكُمْ ثَوْبَانِ فَلْيُصَلِّ فِيهِمَا فَإِنْ لَمْ يَكُنْ إِلاَّ ثَوْبٌ وَاحِدٌ فَلْيَتَّزِرْ بِهِ وَلاَ يَشْتَمِلِ اشْتِمَالَ الْيَهُودِ  

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.  

نَهَى رَسُولُ اللَّهِ ﷺ أَنْ يُصَلَّى فِي لِحَافٍ لاَ يَتَوَشَّحُ بِهِ وَالآخَرُ أَنْ يُصَلَّى فِي سَرَاوِيلَ وَلَيْسَ عَلَيْكَ رِدَاءٌ