The Book of Pilgrimage (Kitab Al-Hajj)
Muslim :: Book 7 : Hadith 2932
Ibn Abbas (Allah be pleased with them) reported that Allah's Apostle (may peace be upon him) made al-Fadl sit behind him (on the camel back) from the place (where the two prayers) are combined (Muzdalifa). Ibn Abbas (Allah be pleased with them) also informed that Allah's Apostle (may peace be upon him) did not stop pronouncing Talbiya till he threw pebbles at Jamrat al-'Aqaba.