Ibn 'Abbas said that a piece of red stuff was put in the grave of Allah's Messenger (ﷺ) .
Related hadith on this topic
Explanation & Benefits
Shaykh Maulana Abdul Aziz Alvi
Hadith Commentary: Benefits and Issues: The freed slave of the Prophet sallallahu alayhi wa sallam placed this sheet in the grave solely on the basis that, after you sallallahu alayhi wa sallam, no one else should use it. However, since this was not correct, according to Imam Ibn Abd al-Barr, it was taken out. And the majority of jurists (jumhur fuqaha) have deemed it disliked (makruh) to spread cloth beneath the deceased.
Source: Tuhfat al-Muslim: Commentary on Sahih Muslim, Page: 2241