Ata (may Allah have mercy on him) said: Stoning the Jamrahs is two days riding and two days walking. The Shaykh (may Allah have mercy on him) said: If the hadith of al-Umari is sound, it is more worthy of being followed.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9560