He who has Pride
Abdullah bin Mas`ud (radi Allahu anhu) said, The Prophet (sal Allahu alaihi wa sallam) said, “He who has, in his heart, an ant’s weight of pride will not enter Jannah.” Someone said: “A man likes to wear beautiful clothes and shoes?” The Prophet (sal Allahu alaihi wa sallam) replied, “Allah is Beautiful, He loves beauty. Pride means ridiculing and rejecting the Truth and despising people (i.e. looking down at people).”
We benefit from this Hadith that a person who has even an ants weight of pride in his heart will be barred from entering Jannah (Paradise).
The word ‘Dharatin’ (translated above as ant’s weight) used in the Hadith is used to mean the smallest amount and it means in Arabic either the smallest ant or the particle which is radiated by sun-rays and seen through a wall-chink.
Obviously, such a particle has almost a non-existent amount, but even this much is disapproved by Allah. If pride incites a man to deny the existence of Allah and His Revelation, he is sure to be thrown into Hell. He also faces Divine displeasure and the danger of infernal fire if mere consideration of riches, physical beauty, social and intellectual prominence and family status makes him proud and self-conceited and he looks down upon others, or persists in the denial of Truth. First he will receive punishment and only then will be admitted into Jannah.
And Allah knows best!