Thabit bin Aslam Albanani ثابت بن أسلم البناني · The Book of Purification and its Sunnah

A Bedouin came to the Prophet and asked him about ablution. He showed him how to perform it washing each part of the body three times. Then he said: 'This is the ablution, and whoever does more than this, has done evil, transgressed the limits and wronged himself.'"

"Ibn 'Abbas came to me and asked me about this Hadith" meaning the Hadith, that she had narrated, saying that the Messenger of Allah performed ablution and washed his feet. "Ibn 'Abbas said: 'The people are insisting on washing their feet, but I do not find anything in the Qur'an except (the injunction to) wipe them.'"

"I heard the Messenger of Allah being asked about water in the wilderness that is frequented by beasts and predators. The Messenger of Allah said: "If the water reaches the amount of two Qullah, nothing can make it impure (Najis).'" (Sahih) Another chain with similar wording.