´It was narrated that Ibn 'Abbas said:` "When the Messenger of Allah was buried, a red velvet cloak was placed beneath him."
Explanation & Benefits
Hafiz Muhammad Ameen
The Sunnah shroud consists of three garments only. Nowadays, practice is also upon this. However, if an additional sheet is spread underneath, then according to this hadith, it is permissible. For further details, see: (Dhakheerat al-‘Uqba Sharh Sunan an-Nasa’i: 19/364–369)
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2014