Hadith 5323
Chapter 98: The Command to Wear White Garments - كتاب الزينة من السنن
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا حَمَّادٌ، عَنْ أَيُّوبَ، عَنْ أَبِي قِلاَبَةَ، عَنْ سَمُرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " عَلَيْكُمْ بِالْبَيَاضِ مِنَ الثِّيَابِ فَلْيَلْبَسْهَا أَحْيَاؤُكُمْ وَكَفِّنُوا فِيهَا مَوْتَاكُمْ فَإِنَّهَا مِنْ خَيْرِ ثِيَابِكُمْ " .
It was narrated that Samurah said:
"The Messenger of Allah [SAW] said: 'You should wear white garments; dress your living ones in them, and shroud your dead in them, for they are among the best of your garments.'"
Reference : Sunan an-Nasa'i 5323
In-book reference : Book 48, Hadith 284