´It was narrated that Khuzaimah bin Thabit said:` "The Messenger of Allah set a time limit for the traveler of three days, and if the questioner had persisted in asking, he would have made it five (days)."
Hadith Referenceسنن ابن ماجه / كتاب الطهارة وسننها / 553
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:ضعيف, إسناده ضعيف, سنن أبي داود (157), انوار الصحيفه، صفحه نمبر 398
1؎ : If a traveler has put on leather socks (khuffayn) after performing ablution (wudu), then he may wipe over them for three days and three nights. It should be noted that the time when he put them on is not taken into account; rather, the time from which he began wiping over the socks for prayer is what is considered. Also, if the need for a ritual bath (ghusl) arises, then the socks must be removed.