Sunan an Nasai
3079
Sahih+2

It was narrated from Ibn 'Abbas that his brother Al-Fadl bin 'Abbas said:"I was riding behind the Prophet and he continued to recite the Talbiyah until he stoned Jamratul'Aqabah. He stoned it with seven pebbles, saying the Takbir with each throw

SahihAbu Ghuddah
SahihAl-Albani