The Messenger of Allah ﷺ stood at Arafah and said, "This is the standing place, and all of Arafah is a standing place."
حدثنا علي بن محمد حدثنا يحيى بن آدم عن سفيان عن عبد الرحمن بن عياش عن زيد بن علي عن أبيه عن عبيد الله بن أبي رافع
وقف رسول الله ﷺ بعرفة فقال هذا الموقف وعرفة كلها موقف
[Its chain of transmission is daif] Abu Dawud narrated it in the Book of Hajj, Chapter on Prayer at Jamm, hadith no. 1935, from the hadith of Yahya bin Adam, transmitted through him. Tirmidhi said, in hadith no. 885, hasan sahih.Sufyan Thawri was corroborated by Mughira bin Abdul-Rahman bin Harith Makhzumi, as recorded by Ahmad, 1/76.