"Sometimes he performed Ghusl at the beginning of the night and sometimes he performed Ghusl at the end." I said: "Praise be to Allah Who has made the matter flexible."
Sunan an-Nasa'i Book 1, Hadith 223
← Previous Hadith "None of you should urinate into still water and then perform Ghusl from it."

Sunan an-Nasa'i Book 1, Hadith 222 Next Hadith → "I entered upon 'Aishah and asked her: 'Did the Messenger of Allah (ﷺ) perform Ghusl at the beginning of the night or at the end?' She said: 'Both. Sometimes he performed Ghusl at the beginning and sometimes at the end.' I said: 'Praise be to Allah who has made the matter flexible.'"

Sunan an-Nasa'i Book 1, Hadith 224