Hadithcore
Riyad as-Salihin, 788

Umm Salamah (May Allah be pleased with her) reported:

Out of all garments, the Messenger of Allah (ﷺ) liked the Qamees the best. <b>[Abu Dawud and At-Tirmidhi ]</b>. Editor's note: The Qamees is a modest, traditional outfit thought to resemble what is now referred to as a thawb.

عن أم سلمة رضى الله عنها قالت‏:‏ كان أحب الثياب إلى رسول الله صلى الله عليه وسلم القميص‏.‏((رواه أبو داود والترمذي))

References1 variant
In-Book Reference
Book 3, Hadith 11
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) It is recommended to wear a Qamis, for the Prophet (may Allah’s peace and blessings be upon him) used to wear it, and this was the most favorite clothing to him.<br> 2) It is the Prophet’s guidance to wear what is more concealing of the ‘Awrah.