Sunan Ibn Majah
556
Hasan+2

It was narrated from 'Abdur-Rahman bin Abu Bakrah, from his father, that:The Prophet granted a concession to travelers: "If a traveler performed ablution and put on leather socks, then he performed a fresh ablution, he could wipe over the leather socks for three days and nights; the resident could do so for one day and one night

HasanAl-Albani
HasanMuhammad Fouad Abd al-Baqi