What is understood from this hadith is that arrogance is rejecting what one knows is right, because the person saying it is young, poor, a student, or weak. Looking down on people is like being arrogant with a poor person, because he is poor. Thus, the arrogant refuses to speak with him or talks to him in a haughty way.
2- Enmity: It is to hate a Muslim, to accept this feeling, and to act in accordance with this feeling.
The Prophet, sallallahu ^alayhi wa sallam, said:
مَنْ أَرَادَ أَنْ يُزَحْزَحَ عَنِ النَّارِ وَيُدْخَلَ الْجَنَّةَ فَلْتَأْتِهِ مَنِيَّتُهُ وَهُوَ يُؤْمِنُ بِاللهِ وَالْيَوْمِ الآخِرِ وَلْيَأْتِ إِلَى النَّاسِ بِمَا يُحِبُّ أَنْ يُؤْتَى إِلَيْهِ.
Man arada ay yuzahzaha ^anin-Nari wa yudkhalal-Jannata, falta’tihi maniyyatuhu wa huwa yu’minu billahi wal yawmil-akhiri, wal ya’ti ilan-nasi bima yuhibbu ay yu’ta ilayh.