I read in a hadith that a person with a weight of an atom of pride cannot enter jannah.
In the name of Allah, Most Compassionate, Most Merciful.
Allah states in the noble Qur’an, “Verily, he (Allah) does not like the proud ones.” (An-Nahl: 23)
Abdullah ibn Mas’ud narrates that the Apostle of Allah (sallal lahu alayhi wa sallam) observed: “He who has in his heart the weight of a mustard seed of pride shall not enter Paradise.” A person (amongst his hearers) said: Verily a person loves that his dress should be fine, and his shoes should be fine. He (the Prophet) remarked: “Verily, Allah is Graceful and He loves Grace. Pride is disdaining the truth (out of self-conceit) and contempt for the people.” (Sahih Muslim: 34)
The reason why a person who has pride will not enter paradise can be understood from the above Hadith. A person who has pride has contempt for the truth and does not have any regards to the commandments of Allah and his Prophet, therefore will not be on the straight path and have the ability to do those actions which please Allah.
Only Allah knows best.
Darul Ifta, Birmingham