Thou wilt see the wrongdoers in fear on account of what they have earned, and (the burden of) that must (necessarily) fall on them. But those who believe and work righteous deeds will be in the luxuriant meeds of the Gardens: they shall have, from their Lord, all that they wish for. That will indeed be the magnificent Bounty (of Allah).[Qur'an 42:22]

It is narrated on the authority of 'Abdullah b. Mas'ud(RA) that the Messenger of Allah (may peace be upon him) observed: None shall enter the Fire (of Hell) who has in his heart the weight of a mustard seed of Iman and none shall enter paradise who has in his heart the weight of a mustard seed of pride.