Sayyiduna Khuzaymah bin Thabit (may Allah be pleased with him) said: A Bedouin came to the Messenger of Allah (peace and blessings be upon him) and asked him about ablution (wudu), and he (peace and blessings be upon him) said: "Three days for the traveller, and one day for the resident" (meaning in wiping over the leather socks), and had that Bedouin asked him for more, he (peace and blessings be upon him) would have given him more.
Hadith Referenceالمعجم الكبير للطبراني / باب الخاء / 3743