´It was narrated from Ibn 'Abbas that:` The Prophet got up during the night and went to the toilet and relieved himself, then he washed his face and hands, and went back to sleep. (Sahih) Another chain with similar wording.
Hadith ReferenceSunan Ibn Majah / The Book of Purification and its Sunnah / Hadith: 508
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم