Sahih Al Bukhari Hadith Number 1752

Narrated Salim bin `Abdullah: `Abdullah bin `Umar used to do Rami of the Jamrat-ud-Dunya with seven small pebbles and used to recite Takbir on throwing each stone. He, then, would proceed further till he reached the level ground, where he would stay for a long time, facing the Qibla to invoke (Allah) while raising his hands. Then he would do Rami of the Jamrat-ul-Wusta similarly and would go to the left towards the level ground, where he would stand for a long time facing the Qibla to invoke (Allah) while raising his hands. Then he would do Rami of the Jamrat-ul-Aqaba from the middle of the valley, but he would not stay by it. Ibn `Umar used to say, “I saw Allah’s Messenger (peace be upon him) doing like that.”