Sunan Ibn Majah 554
سنن ابن ماجه#554SahihIt was narrated from Khuzaimah bin Thabit that:The Prophet said: "Three days." I think he said, "And three nights during which the traveler may wipe over his leather socks
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 1:288