Ummul Mu-mineen, Ummi Salamah Radiyallahu 'anha relates:
"Of all the clothing, Rasulullah Sallallahu 'Alayhi Wasallam preferred wearing the qamis (Thowb, kurtaa) the most" (TR)
English reference (TR): Book 8, Hadith 53 (TR)
Arabic reference (TR): Book 8, Hadith 54 (TR)