The Prophet ﷺ threw the pebbles at the Jamrah while mounted on his camel.
حدثنا أبو بكر بن أبي شيبة حدثنا أبو خالد الأحمر عن حجاج عن الحكم عن مقسم
أن النبي ﷺ رمى الجمرة على راحلته
No references are available.
[Hasan] Tirmidhi transmitted it, in the book of Hajj, chapter on stoning the pillars while riding or walking, no. 899, from the hadith of Hajjaj bin Artah, with the same wording, no. 496, 1129, 2587, and he said, hasan, and the following hadith serves as a corroborating witness for it.