It was narrated that Abu Hurairah said:
"They said: 'O Messenger of Allah! What about the purification of the leather socks?' He said: 'For the traveler it is three days and nights, and for the resident it is one day and one night.'" (JA)
English reference (JA): Vol. 1, Book 1, Hadith 555 (JA)
Arabic reference (JA): Book 1, Hadith 598 (JA)