It is narrated from Sayyiduna Umar bin Abi Salamah (may Allah be pleased with him) that he saw the Prophet (peace and blessings be upon him) praying in a single garment in the house of Sayyidah Umm Salamah (may Allah be pleased with her); he (peace and blessings be upon him) had placed its end over both his shoulders.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 8247