Yahya related to me from Malik from Ibn Shihab that Said ibn al-
Musayyab said that Abu Hurayra was asked, "May a man pray in one
garment?" He said, "Yes." The man then said to him "Do you do that?"
and he replied, "Yes, I pray in one garment while my clothes are on
the clothes-rack."
Muwatta Malik Book 8, Hadith 32