Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) said that the Prophet (peace and blessings be upon him) departed from Jam' until he reached the valley of Muhassir; then he urged his she-camel on until he had crossed the valley. Then he stopped, then seated Sayyiduna al-Fadl (may Allah be pleased with him) behind him, then came to the Jamrah and stoned it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9525