Muwatta Malik 109
موطأ مالك#109SahihYahya related to me from Malik from Nafi that Abdullah ibn Umar, if he wished to sleep or eat while junub, would wash his face, and his arms to the elbows, and wipe his head. Then he would eat or sleep. 2.20 The Repetition of the Prayer by a Person in a State of Major Ritual Impurity, his Doing Ghusl, when He has Prayed without Remembering it, and his Washing his Garments
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Sahih
In-book reference: 2:78