"The Messenger of Allah ﷺ said: 'No one will enter Paradise who has even a mustard-seed's weight of arrogance in his heart, and no one will enter Hell who has even a mustard-seed's weight of faith in his heart.'" (Using translation from Ibn Mājah 59)
قَالَ رَسُولُ اللهِ ﷺ لَا يَدْخُلُ الْجَنَّةَ مَنْ فِي قَلْبِهِ مِثْقَالُ حَبَّةٍ مِنْ كِبْرٍ وَلَا يَدْخُلُ النَّارَ مَنْ فِي قَلْبِهِ مِثْقَالُ حَبَّةٍ مِنْ خَرْدَلٍ مِنْ إِيمَانٍ