It wasnarrated that Usamah bin Zaid said:
"I departed from 'Arafatwiththe Messenger of Allah (ﷺ), and when he reached the mountainpathat which the chiefs would dismount, he dismounted and urinated,thenperformed ablution. I said: '(Is it time for) prayer?' He said:'The prayer is still ahead of you.' When he reached Jam'(Muzdalifah)he called the Adhan and Iqamah, then he prayed Maghrib.Then no oneamong the people unloaded (the camels) until he hadprayed 'Isha'."
English reference: Vol. 4, Book 25, Hadith 3019
Arabic reference: Book 25, Hadith 3134