Could you reference this narration?
“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.”
Imams Nasai and Ahmad (rahimahumallah) have recorded this Hadith.
Sayyiduna Samurah ibn Jundub (radiyallahu ‘anhu) reports that Nabi (sallallahu ‘alayhi wa sallam) said: “You should [wear] white garments, your living ones should wear them and shroud your deceased in them for they are the best of your garments.”
(Sunan Nasai; Al Mujtaba, Hadith: 5323, Musnad Ahmad, vol. 5 pg. 12)
And Allah Ta’ala Knows best.
Answered by: Moulana Suhail Motala
Approved by: Moulana Muhammad Abasoomar