Imam Bukhari narrates: Ubaidullah bin Musa narrated hadith to us, he said: Hisham bin Urwah narrated hadith to us, from his own father, from Hazrat Umar bin Abi Salamah, may Allah be pleased with him, that the Prophet ﷺ prayed wearing a single cloth, he kept its two ends opposite (he put the right end upon the left shoulder and put the left end upon the right shoulder and tied a knot between them).
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، قَالَ حَدَّثَنَا هِشَامُ بْنُ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عُمَرَ بْنِ أَبِي سَلَمَةَ
أَنَّ النَّبِيّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ صَلَّى فِي ثَوْبٍ وَاحِدٍ قَدْ خَالَفَ بَيْنَ طَرَفَيْهِ
Reference: Sahih Al Bukhari 354