Abu al-Darda · The Book of Purification and its Sunnah

"The Messenger of Allah said: 'Allah does not accept any prayer without purification and He does not accept any charity from Ghulul.'" (Sahih) Another chain with similar wording.

"The Messenger of Allah said: 'No one among you should urinate into standing water.'"

The Prophet performed ablution using (the water in) a vessel made of brass.

"I saw Jabir bin 'Abdullah performing every prayer with one ablution, and I said: 'What is this?' He said: 'I saw the Messenger of Allah doing this, and I am doing as the Messenger of Allah did.'"