"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.'" (Using translation from Nasāʾī 5323)
قَالَ رَسُولُ اللهِ ﷺ عَلَيْكُمْ بِهَذَا الْبَيَاضِ فَيَلْبَسُهُ أَحْيَاؤكُمْ وَقَالَ رَوْحٌ فَلْيَلْبَسْهُ أَحْيَاؤُكُمْ وَكَفِّنُوا فِيهِ مَوْتَاكُمْ فَإِنَّهُ مِنْ خَيْرِ ثِيَابِكُمْ