Mujahid bin Jabir مجاهد بن جبر · The Book of Purification

"The Messenger of Allah (ﷺ) passed by two graves and said: 'These two are being punished, but they are not being punished for something that was difficult to avoid. As for this, he used not to take precautions to avoid (his body to clothes being soiled by) urine, and this one used to walk around spreading malicious gossip.' Then he called for a fresh palm-leaf stalk and split it in two, and placed one piece on each of the two…

"He would sprinkle his private parts with it." Shaikh Ibn As-Sunni said: "Al-Hakam (one of the narrators) is Ibn Sufyan Ath-Thaqafi. The purpose is to ward off devilish whispers lest the person think any emission has taken place, and thus think that his Wudu' has been invalidated.

"I saw the Messenger of Allah (ﷺ) performing Wudu' and sprinkling his private area (with water)."

"I said: 'O Messenger of Allah, I am a woman with tightly braided hair; should I undo it when performing Ghusl from Janabah?' He said: 'No it is sufficient for you to pour three handfuls of water over your body.'"