"I said to Ibn 'Umar: 'I see you are wearing Sibtiyyah sandals, and you performed Wudu' in them.' He said: 'I saw the Messenger of Allah (ﷺ) wearing then and performing Wudu' in them.'"

Made of hairless, tanned leather.
Sunan an-Nasa'i Book 1, Hadith 117
← Previous Hadith "Uthman called for water for Wudu'. He washed his hands three times, then he rinsed his mouth and nose, then he washed his face three times, then washed his right hand up to the elbow three times. Then he washed his left hand likewise. Then he washed his left hand likewise. Then he wiped his head, then he washed his right foot up to the ankle three times, and he washed his left foot likewise, and he washed his left foot likewise. Then he said: 'I saw the Messenger of Allah (ﷺ) performing Wudu' as I have just done.' Then he said: "The Messenger of Allah (ﷺ) said: 'Whoever performs Wudu' as I have just done, then prayes two Rak'ahs without letting his thoughts wander, his previous sins will be forgiven.'"

Sunan an-Nasa'i Book 1, Hadith 116 Next Hadith → "Are you wiping (over you Khuffs)?" He said: "I saw the Messenger of Allah (ﷺ) wiping (over his Khuffs)." The companions of 'Abdullah liked what Jarir said, because Jarir became Muslim shortly before the Prophet (ﷺ) died.

In the narration recorded by At-Tirmidhi Nos. 93,94) this comment is attributed to Ibrahim, one of the narrators.

Sunan an-Nasa'i Book 1, Hadith 118