Abdullah bin Wahb عبد الله بن وهب بن مسلم القرشي · The Book of Purification and its Sunnah

"The Messenger of Allah said: 'When you perform ablution, sprinkle water.'"

The Prophet used to perform ablution for every prayer, but on the day of the conquest of Makkah, he performed all of the prayers with one ablution.

"I was listening to 'Abdullah bin 'Umar bin Khattab in the mosque, and when the time for prayer came, he got up, performed ablution, and offered prayer, then he went back to where he had been sitting. When the time for 'Asr (Afternnon prayer) came, he got up, performed ablution, and offered prayer, then he went back to where he had been sitting. When the time for Maghrib (Sunset prayer) came, he got up, performed ablution, and offered prayer, then…

Abu Sa'ib, the freed slave of Hisham bin Zuhrah, told him that he heard Abu Hurairah say: "The Messenger of Allah said: 'No one of you should bathe in standing water when he is sexually impure.'" He (Abu Sa'ib) said: "What should he do, O Abu Hurairah?" He said: "Let him take some out (and pour it over himself)."

"The Messenger of Allah said, 'No one of you should stand to pray when he feels some discomfort (because of needing to urinate or defecate).'"