It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that once a person asked the Prophet (peace and blessings be upon him), "Can a person pray in a single garment?" The Prophet (peace and blessings be upon him) replied, "Does each one of you have two garments?"
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 8549
Hadith Gradingحکم دارالسلام:حدیث صحیح ، وھذا إسناد حسن ، خ : 365 ، م : 515