I helped the Prophet (ﷺ) in performing ablution and he passed his wet hands over his Khuffs and prayed.
Sahih al-Bukhari Book 8, Hadith 40
← Previous Hadith Hammam bin Al-Harith said, "I saw Jarir bin `Abdullah urinating. Then he performed ablution and passed his (wet) hands over his Khuffs (socks made from thick fabric or leather), stood up and prayed. He was asked about it. He replied that he had seen the Prophet (ﷺ) doing the same." They approved of this narration as Jarir was one of those who embraced Islam very late.

Sahih al-Bukhari Book 8, Hadith 39 Next Hadith → Were you to die you would die on a "Sunna" (legal way) other than that of Muhammad (ﷺ)."

Sahih al-Bukhari Book 8, Hadith 41