Abu Hurairah (RA) reported the Messenger of Allah (ﷺ) saying: None of you must wash in standing water when he is in a state of Junub. And Abu Hurairah (RA) was asked how it was to be done; he said: It was to be taken out in handfuls.
Hadith ReferenceSahih Muslim / The Book of Purification / Hadith: 283