Khalid bin al-Harith bin 'Ubaid خالد بن الحارث بن عبيد · The Book of Purification

"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.

"The Messenger of Allah (ﷺ) said: 'None of you should perform Ghusl in standing water when he is Junub.'"