It was narrated from Ubayy bin 'Imarah, in whose house the Messenger of Allah performed prayer facing both prayer direction, that : He said to the Messenger of Allah: "Can I wipe over my leather socks?" He said: "Yes." He said: "For one day?" He said: "For two days?" He said: "For three?" And so on, until the number reached seven. He (the Prophet) said: "For as long as you see fit."

It was narrated from 'Uqbah bin 'Amir Al-Juhani that: He came to 'Umar bin Khattab from Egypt. 'Umar said: "How long has it been since you have taken off your leather socks?" He said: "From one Friday to the next." He said: "You have acted in accordance with the Sunnah."