Faith is a reason for salvation from Hell and winning Paradise while arrogance is an attribute that refers to corrupted hearts and a reason for entering Hell. In this hadith, the Prophet ﷺ informed that a Muslim will neither enter Hell nor even remain there forever if his heart has the weight of a mustard seed of faith. Mustard is a plant with very small black fruits. It is a linguistic usage referring to smallness. It is Allah's great blessing that he will save the believers for their faith, even if He holds them accountable for their deeds first and admits them to Paradise by His grace and mercy. Afterward, the Prophet informed that a Muslim will not enter Paradise if his heart has the weight of a mustard seed of arrogance. Arrogance is to give oneself a high prestige that it does not deserve and belittle people. Allah is the only one that deserves this attribute. Mentioning the infinitesimal mustard seed indicates that even the slightest amount of arrogance in a Muslim's heart is a reason for not initially entering Paradise until he is held accountable for this arrogance which may necessitate punishment. Finally, this hadith contains the following benefits: (1) It is proof that faith increases and decreases in hearts and (2) It forbids arrogance..