No one with arrogance enters Paradise
لَا يَدْخُلُ الْجَنَّةَ مَنْ كَانَ فِي قَلْبِهِ مِثْقَالُ ذَرَّةٍ مِنْ كِبْرٍ
La yadkhulu-l-jannata man kana fi qalbihi mithqalu dharratin min kibr.
"No one will enter Paradise who has an atom's weight of arrogance in his heart."
Narrated by Abdullah ibn Mas'ud. Sahih Muslim 91
A short reflection
Kibr is defined further in the same hadith: rejecting the truth and looking down on people. Both diseases, both fatal to the heart, both within reach to cure.