Riyad as-Salihin
Riyad as-Salihin 779
The Excellence of Wearing White Clothes and the Permissibility of Wearing Red, Green, Yellow and Black Clothes Made from Cotton and Linen but not Silk
Arabic hadith text
وعن سمرة رضى الله عنه قال: قال رسول الله صلى الله عليه وسلم :"إلبسوا البياض؛ فإنها أطهر وأطيب، وكفنوا فيها موتاكم". ((رواه النسائي والحاكم))
Translation
Samurah (May Allah be pleased with him) reported
The Messenger of Allah (ﷺ) said, 'Wear white clothes because they are the purest and they are closest to modesty; and shroud the dead in it."[An- Nasa'i and Al-Hakim].