And do not walk on the Earth arrogantly. Surely you can neither crack the Earth nor stretch to the height of the mountains.
Qur’an 17:37
No one with enter Paradise in whose heart is a mustard-seed of arrogance.
Prophet Muhammad (PBUH)
A bad deed which you regret in your heart is a thousand times better than the good deed that makes you feel proud.
Imam Ali (AS)
Three habits destroy a man or woman: greed, envy, and pride.
Imam Ghazzali
Your first bath was done by someone and your last bath will be done by someone, so where are you going with your pride and arrogance?
Unknown author
Every time your head touches the ground in prayer, remember it is to teach you to put down your ego.
Unknown author
Ahmed Eltawil 