Abu Salamah narrated that ‘Abdullah b. ‘Amr ran across ibn ‘Umar on the hill of Marwah, so they descended and talked. And then ‘Abdullah b. ‘Amr left and ibn ‘Umar sat and wept.
He was asked, “Why are you weeping?”
Ibn ‘Umar replied, “‘Abdullah b. ‘Amr claims that he heard the Messenger of Allah (S) say, ‘Whoever has an atoms weight of arrogance in his heart, Allah will throw him in the hellfire on his face.'”
[Bayhaqi (10:191), Al-Haythami (‘Majma’az-Zawai’id)]
(Read on pg 57, Ibn al-Jawzi, Disciplining The Soul. Daar as-Sunnah Publishers. Birmingham: 2011.)