Sunan an-Nasa'i #3020 · The Book of Hajj

on the eveing of Arafat and on the morning of Jam (Al-Muzdalifah), when they departed, the Messenger of Allah said to the people: "You must be tranquil," and was reining in his she-came. Then, when he was in Muhassir, which is part of Mina, he said: "You have to look for pebbles the size of date stones of fingertips," with which to stone the Jamrat. And the Messenger of Allah continued to recite the Talbiyah until he stoned Jamrat Al-Aqabah