Allah's Messenger (ﷺ) proceeded from `Arafat till when he reached the mountain pass, he dismounted, urinated and then performed ablution but not a perfect one. I said to him, ("Is it the time for) the prayer, O Allah's Messenger (ﷺ)?" He said, "The (place of) prayer is ahead of you." He rode till when he reached Al-Muzdalifa, he dismounted and performed ablution and a perfect one, The (call for) Iqama was pronounced and he led the Maghrib prayer. Then everybody made his camel kneel down at its place. Then the Iqama was pronounced for the `Isha' prayer which the Prophet (ﷺ) led and no prayer was offered in between the two . prayers (`Isha' and Maghrib).
Sahih al-Bukhari Book 4, Hadith 5
← Previous Hadith Ibn `Abbas said, "The Prophet (ﷺ) slept till he snored and then prayed (or probably lay till his breath sounds were heard and then got up and prayed)." Ibn `Abbas added: "I stayed overnight in the house of my aunt, Maimuna, the Prophet (ﷺ) slept for a part of the night, (See Fath-al-Bari page 249, Vol. 1), and late in the night, he got up and performed ablution from a hanging water skin, a light (perfect) ablution and stood up for the prayer. I, too, performed a similar ablution, then I went and stood on his left. He drew me to his right and prayed as much as Allah wished, and again lay and slept till his breath sounds were heard. Later on the Mu'adh-dhin (call maker for the prayer) came to him and informed him that it was time for Prayer. The Prophet (ﷺ) went with him for the prayer without performing a new ablution." (Sufyan said to `Amr that some people said, "The eyes of Allah's Messenger (ﷺ) sleep but his heart does not sleep." `Amr replied, "I heard `Ubaid bin `Umar saying that the dreams of Prophets were Divine Inspiration, and then he recited the verse: 'I (Abraham) see in a dream, (O my son) that I offer you in sacrifice (to Allah)." (37.102) (See Hadith No. 183)

Sahih al-Bukhari Book 4, Hadith 4 Next Hadith → Ibn `Abbas performed ablution and washed his face (in the following way): He ladled out a handful of water, rinsed his mouth and washed his nose with it by putting in water and then blowing it out. He then, took another handful (of water) and did like this (gesturing) joining both hands, and washed his face, took another handful of water and washed his right forearm. He again took another handful of water and washed his left forearm, and passed wet hands over his head and took another handful of water and poured it over his right foot (up to his ankles) and washed it thoroughly and similarly took another handful of water and washed thoroughly his left foot (up to the ankles) and said, "I saw Allah's Messenger (ﷺ) performing ablution in this way."

Sahih al-Bukhari Book 4, Hadith 6