The Prophet ﷺ threw the pebbles at the Jamrah on the Day of Sacrifice while riding.
حدثنا أحمد بن منيع حدثنا يحيى بن زكريا بن أبي زائدة أخبرنا الحجاج عن الحكم عن مقسم
أن النبي ﷺ رمى الجمرة يوم النحر راكبا
[Hasan]Ibn Majah also narrated it in the Chapters on Rites, Chapter on stoning the pillars while riding, hadith 3034, from Hajjaj bin Artah with the same wording, and it has corroborating narrations in Ibn Majah, hadith 3035 and elsewhere.On this subject there are also narrations from Jabir [Muslim, hadith 1218], Qudama bin Abdullah [to come, 903], and the mother of Sulayman bin Amr bin Ahwas [Abu Dawud, hadith 1966].