Ubayy b. Ka‘b reported the Prophet as saying, “Ablution has a devil called al-Walahan, so guard against the confusion caused by water.”
Tirmidhi and Ibn Majah transmitted it, and Tirmidhi said, “This is a gharib tradition whose isnad is not considered by traditionists to be strong, because we know of no one but Kharija who traced it to the Prophet, and in the opinion of our school he is not strong.”
‘Abdallah b. al-Mughaffal on hearing his son say, “O God, I ask Thee for the white palace on the right of paradise,” said, “Sonny, ask God for paradise and seek refuge in Him from hell, for I heard God’s Messenger say, ‘There will be some among this people who will go over the score in ablution and supplication.”
‘Amr b. Shu'aib, quoting his father on the authority of his grandfather, said that a nomadic Arab came to the Prophet and asked him about ablution. He demonstrated it, performing each detail three times and then said, “This is how ablution should be performed. If anyone does more than this, he has done wrong, transgressed, and done wickedly.”
Nasa’i and Ibn Majah transmitted it, and Abu Dawud transmitted something to the same effect.