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