Hadithcore
Riyad as-Salihin, 780

Bara' (May Allah be pleased with him) reported:

Messenger of Allah (ﷺ) was of medium stature. I saw him wearing a red mantle. I have never seen anything more graceful than that. <b>[Al-Bukhari and Muslim]</b>.

وعن البراء رضى الله عنه قال‏:‏ كان رسول الله صلى الله عليه وسلم مربوعاً، ولقد رأيته في حلةٍ حمراء ما رأيت شيئاً قط أحسن منه.((متفق عليه)) ‏‏

References1 variant
In-Book Reference
Book 3, Hadith 3
Sharh · explanationclick to expand
<b>Guidance from the Hadiths:</b><br> 1) It is permissible to wear red clothing and pray while wearing it, provided it is not purely red.<br> 2) It is permissible to use red tents, for the Prophet’s tent was made of red skin.