Hadith 41
Narrated Khuzaymah ibn Thabit: The Prophet ﷺ was asked about cleansing (after relieving oneself). He said: (One should cleanse oneself) with three stones which should be free from dung. Abu Dawud said: A similar tradition has been narrated by Abu Usamah and Ibn Numair from Hisham.
Hadith 157
Narrated Khuzaymah ibn Thabit: The Prophet ﷺ said: The time limit for wiping over the socks for a traveller is three days (and three nights) and for a resident it is one day and one night. Abu Dawud said: Another version adds: Had we requested him to extend (the period of wiping), he would have extended.