“On the morning of ‘Aqabah, when he was atop his she-camel, the Messenger of Allah (ﷺ) said: ‘Pick up some pebbles for me.’ So I picked up seven pebbles for him, suitable for Khadhf.* He began to toss them in his hand, saying: ‘Throw something like these.’ Then he said: ‘O people, beware of exaggeration in religious matters for those who came before you were doomed because of exaggeration in religious matters.’”
Sunan Ibn Majah Book 25, Hadith 148
← Previous Hadith “I saw the Prophet (saw0 on the Day of Sacrifice, at ‘Aqabah Pillar, riding a mule. He said: ‘O people! When you stone the Pillar, throw small pebbles.’”

Sunan Ibn Majah Book 25, Hadith 147 Next Hadith → “When ‘Abdullah bin Mas’ud stoned ‘Aqabah Pillar, he went to the bottom of the valley and turned to face the Ka’bah, with the Pillar on his right hand side. Then he threw seven pebbles, saying the Takbir with each one. Then he said: ‘From here, by the One besides Whom there is none worthy of worship, did the one throw, to whom Surat Al-Baqarah was revealed.’”

Sunan Ibn Majah Book 25, Hadith 149