Whenever the Messenger of Allah ﷺ was in a state of major ritual impurity and wished to eat or to sleep, he would perform the same ablution he performed for prayer.Ibn Muthanna said in his version of the report, "Hakam narrated to us, saying, 'I heard Ibrahim relate...'"
حدثنا محمد بن المثنى وابن بشار قالا حدثنا محمد بن جعفر ح و حدثنا عبيد الله بن معاذ قال حدثنا أبي قالا حدثنا شعبة بهذا الإسناد قال ابن المثنى في حديثه حدثنا الحكم سمعت إبراهيم يحدث