It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) forbade making a deal over another's deal and wearing two types of clothing, and that is when a person sits wrapped in a single garment with nothing covering his private parts, and that a person wraps himself in his lower garment while praying.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 10148