Abu Dawud Book 4, Hadith Number 1935.
Chapter : Not known.
Narated By Abdullah ibn Abbas : The Apostle of Allah (PBUH) sent ahead some boys from Banu AbdulMuttalib on donkeys on the night of al-Muzdalifah. He began to pat our thighs (out of love) and said: O young! boys do not throw pebbles at the jamrah till the sun rises.