It was narrated from 'Aishah that if the Messenger of Allah (ﷺ) wanted to sleep while he was Junub, he would perform Wudu', and if he wanted to eat he would wash his hands.
Sunan an-Nasa'i Book 1, Hadith 257
← Previous Hadith "If the Prophet (ﷺ)" - (one of the narrators) 'Amr said: "If the Messenger of Allah (ﷺ)" - "wanted to eat or sleep while he was Junub, he would perform Wudu'." In his narration, 'Amr (one of the narrators) added: "Wudu' was for prayer."

Sunan an-Nasa'i Book 1, Hadith 256 Next Hadith → "If the Messenger of Allah (ﷺ) wanted to sleep while he was Junub, he would perform Wudu', and if he wanted to eat or drink," she said: "he would wash his hands and then eat or drink."

Sunan an-Nasa'i Book 1, Hadith 258