Samurah bun Jundub (R.A) says:
"Rasulullah (S.A.W) said, "Wear white clothing because it is more taahir (paak) and clean, and also clothe your dead in it. (IT)
English reference (IT): Book 8, Hadith 66 (IT)
Arabic reference (IT): Book 8, Hadith 68 (IT)